This is the end. My guesses about what's gonna happen to everyone. Emphasis on guess.
Vernon Dursley became a manufacturer of a variety of tools in Europe and America. At the height of his success, a writer for a business magazine who was digging into Dursley's story picked up on him taking in his orphaned nephew. Attempts to contact the boy were completely fruitless – it was almost like he had never existed.
The resulting scandal was enough to ruin the Dursleys. They were divorced after twenty five years of marriage, and their son no longer speaks to them. Petunia returned to her maiden name and moved away to another quiet community with her friend Yvonne where she can continue to spy on her neighbors.
Dudley somehow got through law school. It is suspected that he blackmailed several of his professors. He ruined several well – liked and good hearted people from his prominent position at a famous law firm. Piers Polkiss was a coworker of his, and they frequently plotted ruinations over lunch.
Aunt Marge's Bulldogs became a successful breeding kennel known thoroughout the bulldog breeding community.
The Brazillian Boa Constrictor managed to stow away on a ship to Africa and arrived alive. It was a little sad not to have made it to Brazil, but in the end it continued to live a very happy life.
The Railview Hotel in Cokeworth became a successful chain for all of six months before it went bankrupt.
Mr. and Mrs. Mason made a fortune rebuilding the Muggle world after the Second War.
Griphook became the Head Goblin of Gringotts.
Norbert remains in a colony in Romania.
The Whomping Willow still grows on the Hogwarts grounds.
Ronan, Bane, and Magorian were admitted into the reformed Wizengamot as representatives of the Centuars. Their contributions were usually found more frustrating than anything else, but the Centuars in general are happy to be represented.
Dobby came to work at the Department for the Regulation and Control of Magical creatures. He assists House Elves who are being mistreated by their masters, helping them to secure new placements where they will be treated fairly.
Firenze was never allowed to return to the Centuars.
Doris Crockford moved to Italy to escape Voldemort and liked it so much that she stayed.
Tom continues to run the Leaky Cauldron. There are rumors that he is a vampire, but they have proved unfounded.
Arabella Figg and her cats survived the war without major damage. She became a teacher of Muggle Studies at Hogwarts.
Stan Shunpike now drives the Knight Bus. Ern decided to switch to a Muggle Taxi.
Tom Marvolo Riddle was buried in the Death Eaters' Cemetery in Hogsmeade. Over Harry's protests, Severus Snape was buried in Hosgmeade with the other Death Eaters. Few are seen visiting the cemetery in which the followers of Voldemort were interred. Also interred in the cemetery were Marcus Flint and Terrence Higgs, two former Hogwarts students.
Oliver Wood is the best – loved player ever to play for Puddlemere United. His fan club continued to exist even after his death.
Seamus Finnigan and Pansy Parkinson were married the year after the final battle.
Parvati and Padma Patil opened their own potion shop, selling pre-made love potions and beauty potions.
Lavender Brown became a fortune teller with her own space in Diagon Alley.
Lee Jordan became a Quidditch Commentator. He frequently mentioned Weasley's Wizard Wheezes during the matches he commentated and was often thought to be seen throwing sample products into the crowd, but that could never be proven.
Borgin and Burkes was closed by the Ministry when it was found to be selling items from Death Eaters' homes.
Cornelius Fudge was unable to find work after being ousted at the Ministry. He died poor and miserable.
Dolores Umbridge was convicted of child abuse on several counts and sent to prison. The total years of her sentence make it unlikely that she will be released within her lifetime.
Madam Rosmerta was arrested by the Ministry just after the death of Albus Dumbledore. Harry was able to have her released after the end of the war. She opened a new bar in Kent, which remains there to this day.
All the Dementors were sentenced to be killed shortly after the death of Voldemort. They were completely out of anyone's control, and not even Hermione could come up with an objection.
The Rubeus Hagrid Second War Museum is currently located in what was once a hut on the Hogwarts grounds. There is a full petting zoo behind it, but it contains few animals that anyone would like to pet. Inside the museum are, among other things, Sirus Black's motorcycle, Dedalus Diggle's hat, Luna Lovegood's Order of Merlin (which her friends retrieved from her father's house), and many other personal items belonging to the heroes of both wars.
Draco Malfoy arrived safe and sound in the middle of the fourteenth century. He was never able to return to his own time, but found he liked it better where he was anyway. He was married to a prominent wizard's family, and he and his wife inherited a home on Godric's Lane in the city of Godric's Hollow, which suited Draco very well. After all, everyone knew that living on Godric's Lane connected you to one of the oldest and most famous wizarding families in Britain.
The Fat Lady continues to guard Gryffindor Tower and it is suspected that she and Sir Cadogan are seeing each other, although this is merely rumor.
Madam Pomfrey continued to run the hospital wing at Hogwarts, although she needed a long holiday just after the war.
Sybill Trelawney had only one more accurate prediction, which she gave at the beginning of the war.
Gilderoy Lockhart eventually remembered enough to be able to live on his own, and was released from St. Mungo's.
Argus Filch and Mrs. Norris continued to prowl the Hogwarts corridors for the next sixteen years. They retired to a house in London and remained there until Mrs. Norris died six years later, at a very old age for a cat. Filch followed her within the year.
Madam Pince set the record for how long a person can put up with managing the Hogwarts library. After the war, she was called upon to restore the records of the Ministry of Magic, and she continued to do both from Hogwarts for the next sixty years.
Horace Slughorn returned to his retirement and was replaced as Potions Master by Daphne Greengrass.
Minerva McGonagall continued to be Headmistress of Hogwarts until her death. She was one of the most well-liked headmistresses on record. Her portrait eventually hung in the current Headmaster's office between Dumbledore's and Phineas Nigellus.
Filius Flitwick, as a part-goblin, was much longer-lived than his fellow teachers. After McGonagall's death, he moved on to teach at Beauxbatons for a few years. Eventually, he returned to England and worked as a Charm Caster for the Ministry when their new hiring practices allowed them to hire part-humans.
Albus Dumbledore was a name that was given to a seventeen-year-old boy that landed on a heap of junk in the mid-1800s. He was taken in by a local family and, since he refused to give his own name, they began to call him Albus. Albus's magical power was quite unlike anything anyone had seen before – by the time he took his NEWTs at the end of that year, he was capable of magic that stunned his testers.
As Albus grew up, he came to a few important decisions, including the decision to let the events he remembered from his previous life play out as he remembered them. It was nearly than a hundred years before he saw anyone he recognized, and that was the woman he remembered as his grandmother. She was eleven years old, being sorted into Gryffindor.
Albus defeated Grindelwald in 1945, just as he knew he would have to. He met Tom Riddle, and while he hoped that the outcome would be better this time, he knew deep down that it would not.
Shortly after hearing the prophecy about the two boys who might be the saviors of the wizarding world, Albus knew which boy it would be. A Death Eater attack on each of their homes forced him to try to hide both familes.
One day, Albus was checking in on the Longbottom family when Severus Snape broke through the wards around the home. Albus was watching the boy, and his mental shields were down. Snape, in that moment, read what was running through Albus' head, and while he could have turned Dumbledore in, he recognized that too much had been effected by what happened to do anything but allow things to proceed unhindered.
In order to protect the timeline, Snape became a spy for Dumbledore, and the Order of the Phoenix. He was the one who convinced Dumbledore to step up the protection on James and Lilly Potter, and on Harry.
It didn't work.
Neville Longbottom landed knee first on a junk heap about a hundred and fifty years previously, landing him with a scar on his knee that would one day be a near-perfect map of the London Underground, and breaking his nose when his head hit the ground a moment later. He grew up to discover the twelve uses of dragon's blood, do work on alchemy with none other than Nicholas Flamel, and defeat Grindelwald – under a slightly different name, of course.
Remus Lupin and Nymphadora Tonks were married two weeks after the death of Tom Riddle. Remus eventually was able to work at the Ministry and help pass some new laws expanding the freedom of werewolves. When he was in his mid-forties, a wizard from Bulgaria who had once had an encounter with Gilderoy Lockhart came forward and said he had perfected the Homomorphus Charm. (He had actually perfected it some twenty years previously, but the memory had been erased.) Lupin was the first British wizard to make use of the charm, and, he felt, it was the best thing that ever could have happened to him.
Tonks won a toss and was named Head of the Department of Magical Law Enforcement. Under her leadership, the department was at it's most efficient. She and Lupin had two children and were very happy.
Molly Weasley was rewarded for her work with no less than twenty-five grandchildren. After the war, she and Arthur became foster parents for war orphans, and raised another six children. Harry came to stay at their house for some time after the war, but eventually moved out. The Burrow has been almost completely redone since that time, and is in far better shape, although the garden is still full of gnomes, there is still a ghoul in the attic, and Errol still collapses on delivery.
Arthur Weasley continued to rise through the Ministry to become a Department Head. He invented the Department of Muggle Relations and stayed there until his death.
Bill and Fleur moved to France, where Bill rose up through the Gringotts ranks to become the Head Liason to the Goblins. Their six children were the first children from France to attend Hogwarts and not Beauxbatons.
Percy's girlfriend, Penelope Clearwater, and his parents have established a memorial to his memory at St. Mungo's where it remains to this day.
Fred and George Weasley married Angelina Johnson and Katie Bell in a double ceremony that most people are sure was just a way to drive their mother completely insane. Both were gifted with twin girls, which Molly considers the ultimate act of revenge. Weasley's Wizard Wheezes is a household name, now, and the proceeds were enough for the owners to buy two entire castles – which they did.
There was a ceremony at the end of the year on the Hogwarts grounds, during which Ron and Hermione were made honorary Head Boy and Girl for the year (since those positions had never been filled during the year) and all of Dumbledore's Army was presented with their Orders of Merlin. Harry, Ron, and Hermione were given Orders of Merlin in the First Class.
Ron and Hermione went out for a drink the day after Harry returned from the dead, shared their first kiss the next week, and decided to get married by the end of that year. Ron became a Quidditch coach for the Cannons, and Hermione joined the Ministry. She started as a clerk in the Department for the Regulation and Control of Magical creatures, and rose to run it in a record amount of time. Under her management, the name of the department was changed to the Department of Cooperation With Magical Creatures, and all of the non-humans slowly but steadily gained rights. However, house elves still volunteer to do the work they now have a right to be paid for. Crookshanks moved into Hermione's office and spent many years curled up on her desk.
Ron's Quidditch team wins sometimes, and was recently bumped up to seventh in the league. Ron learned to live with imperfection. "After all," he was always fond of saying, "you can't have everything in life." He and Hermione had three children, all of whom were red-headed and very intelligent. Ron and Harry and their children often played on the weekends for many years.
After being checked out throughly by Madam Pomfrey in the hospital wing upon his return, Harry and Ginny Apparated to the nearest Muggle village and went to the local ice cream parlor for a date. At the end of the date, she was in tears and so was he, but they still felt that it was the best thing that had ever happened to them.
They continued to date for the next two years, and actually managed to go a week without the media catching on. Ginny graduated from Hogwarts and became its' first Defense Against the Dark Arts teacher to remain at the school for more than a year.
Eventually she did leave, when Alastor Moody decided he wanted to give it a try and Ginny was offered a job at the Ministry, designing Ministry-approved curriculum. Ginny became the first official head of the brand-new Department of Magical Education.
She and Harry were married two years after the fall of Voldemort, in the garden at her parents' home. They moved to their own home just outside Ottery St. Catchpole and started a family, which eventually numbered twelve children. Harry became a Quidditch player with the Appleby Arrows. HIs team never lost a match in which he played as Seeker, since the Dementors were no longer even remotely a worry.
It would be a lie to say that Harry was left unscarred by the war. Often during his life he wished he could talk to his father, or his mother, or Sirius. Sometimes he was saddened by the fact that Cedric Diggory still would not come home, and he never gave up the hope that he would someday find out what had happened to Neville (although he never learned the truth about that). But he spent most of his time glad that his life was finally his own, and after his retirement from Quidditch, he entered the political arena.
At first, he just lent his name to various causes. Werewolf regulation was restricted, anti-Dark legislation was tightened, and great pains were taken to make sure that witches and wizards were identified younger, and contacted, especially children who were in orphananges. Harry was a very popular spokesperson for causes he believed in, and over time he became one of the Wizarding World's most respected political figures.
At the age of sixty, Harry was elected Minister of Magic, much to his surprise. He was not highly devoted to the campaign, but it seemed that most people were devoted to him. He remained Minister for an unprecedented twenty-six years, and then retired. Harry lived to a ripe old age, with his family at his side.
Although Harry's life was far from carefree, he was happy more often than not. And while he never was able to lose the fame and notoriety he had won himself by defeating Voldemort, he never again felt that he was cursed by having a scar.
The End