During the reign of William III & Mary II in 1692 the International Statute of Wizarding Secrecy was signed, separating the lives of the magical and the muggles. The reign of the muggle royal family over the magical population of Britain - and later the United Kindgom - was largely undisturbed; both British societies observed the same monarch until the pure-blooded of the magical society began demanding detachment. From what started as being general discontent grew into violent actions with a magical civil war approaching over the horizon. In a stroke of luck that avoided turmoil, the ruling King George III had a magical daughter hidden from the muggle society. This daughter, Princess Charlotte, was quickly installed as the monarch of the magical society of Britain - an act which finally separated the two.
The arrangement worked out perfectly for both societies; whilst both monarchies were separate, the two worked closely to ensure similar values were shared and upheld. When the muggle monarchy changed their house name to Windsor, the magical monarchy followed suit. Everything was harmonious until the ascension of King Henry II. A monarch who wanted to devolve the power of the Ministry itself, Henry became tyrannous early on in his reign. Turmoil that threatened to overthrow the monarchy rose again, saved only by the forced abdication of Henry and the replacement by his eldest daughter, Victoria.
Proving to be the saving grace of House Windsor, Queen Victoria remedied her father's mistakes. She appealed to all crowds of magical life; advocating for no discrimination for species, being proud enough of her pure-blooded heritage to satisfy those who cared whilst remaining completely relatable for all. Her reign, still going strong, has remained among the most harmonious and popular since the magical monarchy's establishment.
Queen Victoria's third child, Princess Vivienne, was always the one child who thrived to be unique and different. Even going as far as attending Beauxbatons after refusing to attend Hogwarts. Her now husband, Henry MacMillan, was a pure-blood wizard who escaped the life of wizarding by becoming a reporter, which inevitably is how Princess Vivienne and Henry met. Several photographs and a few interviews later, and Princess Vivienne made the first move. The rest, some could say was a picture perfect romance as Princess Vivienne and her Prince Henry lived their lives under the umbrella of the royal family.
Princess Vivienne wasn't always a fan favourite in terms of royalty, and most tabloids deemed her as the most polarizing figurehead in the royal family. You either loved her or you hated her, while Prince Henry lived a much more clear path. Fans of the royal family adored him, and even those who weren't a fan of Princess Vivienne knew Prince Henry was not only good for her but also the royal family. He was often described as the picture perfect royal spouse, and many questioned why someone so upright would marry such a polarizing figure. But alas, their marriage worked beautifully, and it wasn't long until kids were brought into the mix.
Prince Octavius Christian Bishop Edward Windsor was the first of Princess Vivienne's children. A rambunctious child he was, certainly getting that from his mother. However, in front of crowds and cameras he had a sense of nobility to him and many fell into little Prince Octavius' charming demeanour. Those around Octavius knew he was good at acting a lot more mature than he really was, often fooling his relatives with his upright attitude that Prince Henry always said was best for the masses. It never lasted long though, at some point Prince Octavius would throw a fit of jealousy.
Octavius wasn't the only child of Princess Vivienne however. A year after Octavius there was the birth of his first sister Sophia, and then his youngest sibling Estelle followed after. As the oldest, Octavius took good care of his younger sisters. Once again, in front of crowds and cameras, Prince Octavius seemed to be a perfect older brother. Always watching out for Sophia and Estelle and following them around making sure they didn't get into trouble. Behind the scenes he wasn't terrible by any means, he was just a lot more independent and would rather do his own things rather than have his little sisters hanging off him.
At the age of eight Octavius had his first magical encounter. With his powers just kicking in, he was getting in a bit of an argument with his sisters when they all made a sandcastle together. Heated, Octavius accidentally caused the sandcastle to blow up with his magic. It was as if a small bomb had hit the castle, blowing the sand crystals in every which way. Octavius was picking sand out of his hair for days after.
Growing up, Princess Vivienne and Prince Henry weren't overly strict on any of the kids, which meant Octavius really had free reign over whatever he wanted to do. He wasn't overly rebellious by any means, aside from parties which he frequently attended. Like his mother, Octavius decided to go to Beauxbatons over the typical choice of Hogwarts. At the time of his first year, he was sorted into the house of Ombrelune. However, after his first year he decided Beauxbatons just wasn't for him and in his second year he was transferred to Hogwarts where he became a Ravenclaw student.
During his time at Hogwarts, Octavius was known to pull the royalty card to get out of things. He more so flaunted and used the label than owned it properly, a great change from when he was little. But as he matured and grew up, Octavius fell back in line and corrected himself. Becoming the strapping young Prince Octavius of Windsor that many know and love today.