Summary: Purebloods, half-bloods, muggle-born, and muggles, she didn't care, they would end up dead in the end. If you are to live, you'd better experience it to your fullest. Thankfully for herself, this was her second chance at it.

Disclaimer: I do not own the Harry Potter series nor do I lay claim to it at all

Warnings: Rated M for future Mature themes, language etc.

A/n: Wow, another fanfiction? What about the things you are currently writing? Hahaha, oops.

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The Rosier family was one of the Noble houses of the Wizarding society. A member of the Sacred 28, a title the family took much pride and arrogance towards. unabashed by their desire to keep their lines pure, the family relied on pureblood engagements and marriages, much how several others did as well. Of course behind closed doors, there were rumors surrounding the lineage, from being an upstart line like their cousins, the Malfoys, to practicing incestuous relations between close family members, much like the Carrows.

By the public standards, they were known for their dark magic and, quite terrible choice, support of the past several dark lords to rise. From Gellert Grindelwald to the most recent, Lord Voldemort. The last two heads, both males, had purposely put themselves and family in the path of favoring, as some put it, ''Pureblood Supremacy", of course, nothing was truly stated by either head nor their families, but the implications were still there.

Although the house of Rosier was a powerful and quiet wealthy one, after the fall of the last head, at the hands of Aurors no less, the family had gone silent. Some thought the ministry had arrested the rest of the family for their support of Voldemort while the rest of wizarding society suggested that the Dark Lord himself axed the rest off in retaliation to their failure, as three more Rosiers had been killed as of recent in fact the scion of the Rosiers, Evan, who was to become the head died after a duel with Alastor Moody.

All the bloodshed had left the only three and a half members of the main branch of the Rosiers, though in fairness there were just over a dozen of them in terms of extended family. The next head to take the mantle of such an accursed, excluding the Blacks of course whose family was actually cursed four times over, was the young sister of the last head, Lyanna Rosier.

As by law, if there are no children of the last head the Lordship or Ladyship passes to the next sibling in line, and if they too are gone it passes to their children, if none then the line of accession moves down through the rest of the line, even if they are heads of other houses. There were more laws and circumstances that meddled into it, but the whole ordeal was generally concluded fairly quickly.

Now while Lyanna Rosier had claimed her Ladyship, seats, and properties, any news of her and her young son was absent. Six months had passed, Voldemort's reign of terror continued, purebloods and half-bloods who had denounced the dark wizard had hidden themselves away, even the most pronounced light families who had fought the dark one and his death eaters such as the Prewitts, and Potters had gone into hiding. Course the Prewitt's were barely hanging on, allegedly there was a hit on them while the Potter heads, Charlus and Dorea had caught some illness as of late and their son, James Potter had just married his muggle-born girlfriend, Lily Potter and gossip had already spread claiming that she was with child.

In the end, it was so strange the Rosiers had locked themselves away in one of their few castles and manors in the countryside, especially as one could not leave Britain, a restriction had been placed, keeping all outside help from entering or aiding. However, the true reason for the disappearance of Lyanna Rosier from society was not out of fear of the Dark Lord, in fact, she could have cared less what he did to her.

Lyanna Rosier was prideful and ambitious, like any Slytherin or woman of her house. With waist long blonde hair and dark green eyes, the former a trait that her mother side the Blacks carried down (except for her cousin Narcissa who like herself took after the Lestrange roots in their blood) and the latter trait, eyes coming from one of the most powerful witches of their line, Vinda Rosier. She was a skilled witch for her age, no doubt in that, though she was no fighter and even with her status as a pureblood and head of a Noble and Ancient house (though not an Ancient and Most Noble House) her place in society was on the arm of a man and not her own.

She knew that with her newfound status her extended family and the houses with second sons who would never be able to inherit their family name would be pushed in front of her urging for marriage to maintain the purity of their lines. Lyanna was no fool to such advances, she had been charmed once a few years prior by her late husband's family, the Blacks.

She had been destined to marry the next head of the blacks, which for the longest time had been one Sirius Black who had been stripped from the family tree, instead of joining her life with Regulus Black. Lyanna had soon fallen with child, an accomplishment her cousin Bellatrix loathed her for, and she quickly birthed the next heir and head of house Black, Cepheus Black.

He was a beautiful black haired dark-eyed prince much like his father. It had been just after his second birthday when she had found herself with child once more. It was a month later that her husband was reported missing and another two months until his death was announced.

Lyanna was not the torn up bride some would have wished to see her as. She held her head with dignity, completing the mourning cycle, her son in tow and her hand protectively over her waist. She didn't hate her husband, in fact, both got along quite well, and if given more time there was a high chance they'd fall in love. They shared interests in literature and most shocking very grey viewpoints on both the wizarding world and pureblood piracy. Unfortunately, fate did not have such a destiny for them, as she was forced to bury the father of her children at the young age of twenty-one.

Due to her not being of Black blood (at least not enough to count) Lyanna was forced to return to the Rosiers, unable to become the head of the Blacks as well. She didn't fight it, she had no desire to deal with the crazy Walburga or even Cygnus Black, the pretentious git who had been aiming to become the head of the Blacks himself. Quite humorously Walburga, who came from a cousin branch was accepted by the house magic as the next head until her grandson, Cepheus Black came of age. It was a surprise to all to be truthful, considering the old woman was practically ancient yet she was still hanging on.

The one thing Lyanna did fight the Blacks for was her children, she refused to let them tarnish and pollute them with whispers of self-hate and blood rituals, the latter a common practice to be fair in ancient houses. It had taken a while, but she gained both the rights and magical guardianship of her children, even the house magic of both Rosier and Black protected them from the backlash both houses shoved at them.

All of this left Lyanna Rosier, head of house Rosier, dowager Lady of house Black, mother to the scion of House Black, and completely and utterly dying.

Childbirth was always a fickle thing especially when it came to old magic and bloodlines, causing stress upon the mother, possibly causing them barren after the birth much like Narcissa Malfoy or in some cases, resulted in the death of the mother. There were also a few theories about the birthing process an how the damage of the magical core during birth resulted in a squib but no one had really wanted to research the concept further.

Lyanna had very few options when it came to a midwife or birthing room. St. Mungos was far too crowded to go there to mention at this point the light side would most likely forbid her entrance. She also could not secure the safety of other places, fearing for her life and those of her son and unborn child. She had very few allies left and even fewer who were healers. Lyanna had thought to floo for Narcissa, but she had just birthed her husband's heir and still on bedrest. And once the pain hit her, the blonde witch had even contemplated calling for Walburga to come to help her. Thankfully through it all, her half-sister Elia Thorne, a half-blood bastard of her fathers, was a practiced healer and quickly came to her aid.

The two had never been on good terms, the younger, Elia deemed as a failure and shame on the family even if it had been their father's fault. However, once the two had graduated Hogwarts, the two began making amends and when Lyanna had become the head of the Rosiers, had written her sisters name on the family tapestry, magic and house officially recognizing her as a Rosier, even if she did not go by Rosier.

The birth was a difficult one, lasting far longer than it should, reaching 36 hours before her baby was finally born. Although it was a happy fair, seeing her daughter in her arms, a beauty sharing her late father's hair to her brother and pale skin of her mother, Lyanna and Elia both knew the toll was too much on her.

Lyanna was dying, she could feel it, the magic leaving her body and her form weakening as the clock ticked by she most likely would not live by the fortnight. But most shockingly she felt okay with it. Course she didn't wish to abandon her children, she wanted to see them grow, dress her daughter up and gossip about potential husbands for her, to see her son become the head of the Blacks and see him marry happily. To leave in them both in such a torn and bitter world was cruel, but she knew when she was gone, they would be in good hands.

It was unconventional for a pureblood to leave their heirs in the hands of a half-blood or lesser, even if they are of blood, especially giving them to a labeled blood traitor. Considering Walburga would love to sink her yellowed nails into her children, Lyanna's dying actions were finalized in her will, hopefully giving her children a future and childhood. With her will signed and rings sent for safekeeping at Gringotts till they were of age, Lyanna said goodbye to her children.

First her son, Cepheus Black, boy no older than three with the weight of the entire Black family on his back. She stared into his dark orbs, his eyes were far older than any child should've been. She remembered when he was born, he would cry and cry, every little thing set him off, it had gotten so bad that she and Regulus considered taking him to St. Mungo's, but just like that everything stopped. He went quiet, and before his 1st birthday he had already been stumbling on his legs and understanding words, quickly walking a and speaking miles before any of his peers. An intelligent child he was, but he could be so cold, acting as if she were not his mother but some stranger at times. But all her thoughts had washed away when she looked at him, cradling his younger sister in his small arms staring at Lyanna with a look of sadness and regret.

"My son, Cepheus, come here please," she called out to him weakly as he came to her bedside, "You are a brilliant and beautiful boy and I am so proud of you, so is your father."

Pain shot through her as she winced feeling the empty numbness fill up inside, "You're future will be hard, you are to be the head of the Black House, and your sister," she gestured to the sleeping baby in his arms shakily, " shall be the head of house Rosier. That means you must be a good brother, teach her, protect her, do you think you can do that for me?"

Her son nodded slowly, eating up and processing the words, "I promise, mother, I'll protect her."

Her heart fluttered, be it from her condition or emotions she cared not, her son had called her mother, a term he never once uttered to her. She felt, happy breaking into a warm smile letting her fingers trace his pale cheeks. He looked so much like Regulus, "Thank you."

Her attention now turned to her daughter she weakly tried to reach out to her, but to no avail, arms far too weak, Lyanna instead cupped her daughter's small hands in hers. "My beautiful daughter, I'm sorry for the life you will be forced to live, but you will have the backing of allies and your brother to protect you." She paused eyes watery and glossing over, "I will always be here to watch over you with your father, and I know you will make us all proud, my beautiful Danielle."

And with that Lyanna Rosier drifted off into eternal slumber, the last images in her mind were of her family and her daughter, the girl whose eyes were her own, the beautiful enchanting green all Rosier women had.

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A/n: Welcome to world building for HP, the fandom that already has a bunch of world building. There legit was no info on the Rosiers so I made a lot up while keeping it as close to canon. And oh boy, I had to make an actual family tree, which was horribly insane. Legit Malfoys, Crabes, Lestranges, Blacks, and Rosiers all bunched together in all of their trees, and that was before I added my Rosier OCs. As some may see I've decided to take a different approach to the whole ''SI/OC reborn trope" so it'll be something new, hopefully!

*Also the names Lyanna, and Elia come from ASOIAF/GOT, Cepheus is the name of a constellation (as common for the Blacks), and Danielle in French means "God judges/God has passed judgement."