In the weeks up to her due date, Charlotte already knew that she would be having a boy – she reckoned that Trelawney had spoken about her dreams with the children at the train station when she said she had to save Severus to get that dream to come true, so it came as a big surprise to her, and Severus, when she on February 4th gave birth to twins – a boy and a girl. She hadn't been to any of those silly check up's as she was a healer, she knew what was going on – or apparently she didn't.
The boy was named Castiel Frederick Snape and the girl Cassandra Dora Snape.
The dream Charlotte had in the past, was however, a little correct – they both had black hair, and the same eyes as Severus had, and Castiel did look remarkably a lot like Severus, while Cassandra looked more like a Weasley – taken her black hair and dark brown eyes into consideration.
They became husband and wife later that year – more exact on May 2nd, the day it had been a year since the defeat of Voldemort.
Juno, Ginny and Fleur were Charlotte's bridesmaids, and Severus had asked, and chosen – quite surprisingly, Kingsley as his best man. It wasn't because they had become close or anything, but Severus kind of liked him – in an 'I don't hate you' kind of way.
The twins were sitting with George and Percy, and though they only were very interested in what was going on with their mummy and daddy.
For Charlotte time seemed to pass by way too fast – a year after the twins had been born, Severus was promoted to Chief of the potions department at the hospital, and Charlotte had been promoted to the chief of the spell damage department.
The twins started walking when they were a year old, and already just three months later, they were beginning to talk – George had almost made it his own little mission to make them talk fluently by the time they were two years old.
In 2002 January 14th Charlotte and Severus had their 3rd child – a boy whom they named Michael Severus Snape. Unlike his brother and sister, he had red hair and the same brown eyes as Severus had.
He started walking around the age of one as well, but unlike his brother and sister he was a quiet child – he preferred playing with himself instead of other children – no matter what they tried, he would much rather sit by himself instead of playing with the others.
It worried Charlotte, as the twins were very sociable. But Severus assured her it was perfectly normal – especially considering that he was Severus's son.
Charlotte did however experience one of her dreams coming true – the dream she'd had while staying at Grimmauld place all those years ago came true in august 2005. They had teddy staying over for a couple of weeks – they couldn't separate the twins from Teddy, so Charlotte had asked Andromeda if Teddy could stay with them for a few weeks.
Charlotte had taken them to a park in the muggle neighborhood – yes, many of the other muggle parents looked at Teddy with odd glances, but just like it had been in the dream, Cassie had fallen down from the swing, and scratched her knee. She came crying over to Charlotte, but she reassured her that her knee would heal right up.
Unlike the dream, Severus came walking into the park with Michael in tow – Michael was three years old, and he found the tree's very fascinating.
They didn't think they would have more children after that – by that time Severus was 42 years old, and Charlotte 31 years old – in their opinion they had enough trouble with keeping the twins in line, as it turned out they were just like their Uncle's once had been – troublemaking rascals.
But they did have one more child – the pregnancy came as a surprise for both of them, as they had already decided they wouldn't have more children. But apparently destiny wanted to go its own ways, so in 2006 July 11th a small girl was brought into the family, now adding up to six people. The girl had red hair and bright blue eyes – she almost looked like a true copy of Charlotte. They named her Lila Charlotte Snape.
Being married and having children with a Weasley could sometimes be difficult – especially around Christmas when the whole Weasley family was together – one year he frightened Hugo, Ron and Hermione's son, so much that Hugo ran out to Hermione, bawling his eyes out, saying Uncle Severus scared him.
Hermione had scolded him, saying he should act like the adult he was instead of acting like their old grouchy Professor. Needless to say, Severus didn't listen to her, and though he never got used to being in the Weasley family, he enjoyed scaring the little rascals – especially Harry's son James.
Sirius and Juno were married for 5 years – from August 2000 to November 2005, but eventually split up – they did however have two children together – Regulus Remus Black and Amelia Jamie Black.
Regulus was born in 2000, on November 10th – He and Michael were good friends, and Regulus was sorted into Slytherin two years before Michael was sorted into Slytherin as well – Severus had never been more proud. It had come as a blow to him when the twins had been sorted into Gryffindor – though he still loved them, and Charlotte assured him that no matter how much he could have done, they were like the Weasley part of the family.
It did give him some joy when he found out Regulus had been sorted into Slytherin, and Sirius had felt that was a blow as well – they never did put their differences aside, and even years after the war had ended and their children were friends, they still loathed each other.
Disclaimer - i don't own anything from the potterverse.