I don't own Harry Potter or anything you recognise.

"Molly and Arthur cannot be expected to look after them all indefinitely," said Professor McGonagall after an extensive discussion, "and as they are all around school age they will need to continue their education. It seems that the best course of action therefore is for any that are witches and wizards to come to Hogwarts." Dumbledore nodded his agreement.

Chapter 3

"If you don't know me, my name is Professor McGonagall. I must express that you have all behaved very irresponsibly by coming here, who knows what effects you have caused."
Professor McGonagall glared reproachfully at the fifteen children arranged in the living room of The Burrow; they were perched on the various chairs and sofas around the room as well as tables, the floor, and one small boy was balanced on a basket of washing. Minerva noted that they all appeared calm, although a blond-haired girl was looking quite red around the eyes. Molly had fed them and now they sat quietly, looking variously excited, curious, nervous and downright scared.
"We know of a way to send you back to your own time," she continued more kindly, "however you will have to stay in this time for an indefinite period. It has been decided that all of you who are witches and wizards are to attend Hogwarts School of Witchcraft and Wizardry-"

"We all go to Hogwarts Professor" interrupted one of the boys, "Well not sure about her…"

Professor McGonagall didn't look where he was indicating and tried to ignore the last comment.

"Very good then, as I was saying, you will all attend Hogwarts as students. I should not need inform you that there could be very serious consequences of your being here and that you should tell no one who you really are and where you have come from. It may be difficult to keep your secret around your parents or others that you know, but I must impress on you the necessity of doing so. I will be giving you new names and will need to use glamour charms to disguise some of your features. The only ones at Hogwarts that know who you really are will be Petunia," she indicated her, "and myself. May I remind you that the Hogwarts castle is very large and there are less comfortable areas than the student's quarters where you can be accommodated if you do not behave appropriately," she glanced sharply at them all.
"Now then, we will say you are my great-nieces and nephews, however I will need a few personal details. Please organise yourselves into family groups and come one at a time and tell me your name, first only please, your year, and your subjects."

One of the older boys stepped forward.

"Arnaud Weasley,"

"First name only please"

"Arnaud, seventh year-"

"You are not! You're only 6th year!" the tallest red headed girl broke in.

"Sixth year. Charms, Defence Against the Dark Arts, Transfiguration, Arithmancy, Potions, Ancient Runes"

"Right, you can be Angus McGonagall, I'll just need to disguise your hair," she waved her wand and his hair changed from bright red to a dusty brown, "there you go, who's next."

A blond-haired boy stepped up, "Xavier, fourth year," he listed his subjects

"You're his brother?" asked Professor McGonagall

"Yes"

"Ok you will be Hamish McGonagall, next"

"Olivia, third year…"

"Morag McGongall"

"Fred, sixth year, Charms, Defence Against the Dark Arts, Herbology Transfiguration, Arithmancy"

"Francis Morris, next"

"Ted, fifth year"

"Edward Morris"

"Patricius, fifth year"

"Eric Morris"

"Dante, third year"

"Daniel Morris" she waved her wand and his hair turned black like his brothers.

"Lile, third year"

"Ian McGonagall" a glamour charm disguised his freckles and gave him hair the same shade as Arnaud.

"Henry, fifth year"

"Are you his brother?"

"No those are my brothers" he indicated two younger boys behind him,

"Ok, Henry McGonagall," his hair appeared the now family shade of brown.

"Zeb, third year"

"Zachary McGonagall" she applied the charm to match Zeb's hair.

"Jack, second year"

"John McGonagall"

"Regina, fourth year, I don't have any brothers and sisters"

"Elspeth McGonagall" her hair turned brown.

"Sam, third year"

"Stuart Brown" his freckles and hair were disguised,

"Yasmine, his sister, second year,"

"Eugenia Brown" she underwent similar changes as her brother.

Finally Jocelyn stepped up.

"Jocelyn, fourth year"

"Jocelyn is my grand-niece once removed," said Molly, "My cousin's granddaughter."

"Okay then, Jocelyn Jones, you can keep your appearance."
-

"Professor" said Henry uncertainly.

"Yes?" she answered,

"I don't want anyone to get in trouble and I don't want you to do anything that might affect the future but I think there is something you should know."

"What is it?"

"It's about Harry Potter-"

"Harry!" exclaimed Molly looking alarmed, as did Professor McGonagall and Petunia.

"It's nothing bad" he assured them, "it's just that he has-"

"Henry" said Fred warningly

"We need to tell them," said Henry, "if we don't Harry will find out who we are"

"What is it?" repeated McGonagall,

"You have to promise Harry won't be in trouble" said Henry, "it's important."

"Very well, now what is it?"

"Harry Potter has a map that shows peoples names," said Henry, "a glamour spell won't fool it."

"Well" said Professor McGonagall frowning,

"But you can't take it from him" said Freddie quickly, "it's important."

"Ok then" she thought for a moment, "I will make you unplottable," she said finally, "your names will not appear on any map; Harry may think it strange if he notices but at least he will not be able to guess your true identities."

"You can do that?" spoke up Ted incredulously, or was it Pat.

"Yes" she replied and proceeded to do so.

----

Less than half and hour later, having said goodbye to Molly, the sixteen teenagers and Professor McGonagall flooed to Hogwarts.

"Welcome to Hogwarts" greeted Professor Dumbledore.

The sorting went smoothly and all were sorted into Gryffindor, none seemed surprised at this but Petunia couldn't help wondering if they were all in Gryffindor in their time or the sorting hat had a plan of it's own.

Professor McGonagall escorted them to the Gryffindor tower. As expected the common room was empty.

"I have managed to find trunks for you, you should find them along with your beds in the dorms" began McGonagall.
"They should give the impression that you have actually arrived with some luggage. They contain some essentials; I will organise the rest of your supplies tomorrow, until then do not allow anyone to see inside your trunk. I trust you know your way around the tower and the castle but remember that you are new. The students should be arriving back from dinner soon; I know that it will be difficult for you to be around your relatives and others you may know or have heard of, but I must stress that you must not do or say anything to give yourselves away. Now second year dorms are on the third level, third year on the fourth, fourth year fifth, etcetera. Goodnight."

A/N: Thanks for reading this far if you've made it. I know not a lot has happened so far, but now you've met the time-travellers and they are at Hogwarts, I think the explanations are mostly done and the action should start to kick up a gear.