Only rosemary and Marie Doué knew exactly to whom they were related…

There weren't many people left now. The twins' younger brother would be called up to be sorted very soon. Rosemary couldn't help but search the crowd of nervous-looking first-year Hogwarts students for him. Rosemary and Marie's guardian told them that their brother looked like their father, and had their mother's eyes. He had heard it from his own brother, Albus Dumbledore, himself.

"Moon" … "Nott" … "Parkinson"

'Ooh, we're sorting the 'P's now!' rosemary thought. Rosemary was told that her younger brother had kept their last name. "That's going to make his life miserable." Rosemary had stated when she was told this.

A pair of twins was called, "Patil" and "Patil". 'Well I guess there are twins in every year.' Rosemary thought. She knew there was a pair of twins one year ahead of her, the notoriously mischievous Fred and George. 'I wish I could remember their last name.' she thought as professor McGonagall called out the next students to be sorted.

"Perks, Sally-Anne" … and then… at last-

"Potter, Harry"

As her younger brother nervously stepped out of the crowd, whispers erupted like steam out of a kettle all over the Hall. As Rosemary stared at Harry tears welled up in her eyes, threatening to trickle down her pale cheeks. Her brother! Her little brother! Seeing him at last, in the flesh, filled her heart to the brim with love. It took all her effort to not run up and tackle him in a hug. 'If I were to do that it would give away the family secret!' she scolded herself for even thinking of doing something so stupid. Looking across the hall to the Slytherin table, she caught her twin's eye. She could tell Marie was fighting the same cruel internal battle she was. Between the twins, the entire Great Hall were craning their necks to get a better view of the famous Boy Who Lived. After quite some time the whispers died down.

"Hey, Rose, I heard he's an orphan just like you!" Rosemary's friend Sophia whispered. "Hey, how come you never told me how your parents died?"

Rosemary was preparing a story in her head when her thoughts were cut off by the sorting hat's yell…

"GRYFFINDOR!"

The table where rosemary was sitting erupted into the loudest cheer she had ever heard… and rosemary was probably cheering loudest of all. One could barely hear Fred and George chanting "we got Potter! We got Potter!" over the other Gryffindors' cheers. Rosemary caught Marie's eye. Marie shrugged, she was obviously disappointed Harry couldn't be in her own house, but at least he was with one of his siblings.

Harry sat down at the end of the long table. Rosemary was at least ten people away from him. 'I guess I'll tell him later.' She thought to herself, 'hopefully with Marie.'

Marie was disappointed that her younger brother wasn't sorted into her own house, but at least he was with their sister.

"Marie!" cried a voice.

"Huh? What?" she said slightly dazed.

"You were spacing out again," said Alie, her fellow housemate.

"Oh, oops. What did Dumbledore say?" asked Marie looking at the food around the table, realizing she had missed the rest of the sorting and the speech.

"Oh, well he told us not to go up to the third floor corridor, unless we want to die a painful and slow death." Explained Alie, pulling a piece of ham onto her gold plate. Marie nodded and began to eat.

A/N - Mary: so this is the first chapter of Harry, Rose and Mars and the Philosopher's Stone. We hope you like it. There are two of us writing this story, one of us writing a part, then the other writing another part. The only way you can tell out parts apart is the point of view. I chose to write from Rosemary's point of view, and Marie's point of view is being written by Victoria. Also, we are planning on doing this throughout the entire Harry Potter book series, but we don't know how to do Deathly Hallows, since the twins will not be in school, and we don't want them camping with the Trio.

A/N – Victoria: So yeah, she pretty much summed it up. Hope you like it, please leave a review and tell us what we need to improve. Thanks