Katarina Roseya Gilcrease is the second-born of Calen Gilcrease and Rose Gilcrease. The two of them met at Hogwarts school of Witchcraft and Wizardry, and followed in life was their marriage and the birth of their first child, Blaise Gilcrease. Katarina was not far after him. Blaise had shown from a yong age a rebellious and dark nature, and this is a far stretch from what Katarina is like. She takes much after her mother, the founder of the Orphanage in Hogsmeade that's helped many children.
Kata's relationship with her brother, Blaise is strained at best. Blaise never treated her very well, but Kata still loves him. She sees the good in him, a trait she had received from her mother is to always look for the best in people, no matter the circumstance. But, even then, her relationship with her mother was a bit strained. Rose was always working. She never really had time for either Blaise or Kata - And soon, this became a point that she needed to focus on. Rose soon left her job, occasionally checking in to see how things are going.
Rose and Calen moved their family to a Muggle neighborhood in London. Their father continues to work in a Wzarding shop, Quality Quidditch Supplies, while their mother now has a Muggle job in an office. Because of this, the siblings grew up in a Muggle environment. While they knew OF magic, they've never experienced it and have rarely seen it. So, when Blaise had shown his first signs of Magic, Kata was entranced. From that moment forward, she had attempted to recreate the sparks she saw fly from Blaise's hands that day. She, unfortunately, hadn't had any luck. Not until she turned eight years old, and not exactly with sparks. Rather, she made it snow inside, because she wanted it to be winter. She was always a very stubborn child.
Blaise had gotten his letter and arrived to Hogwarts two years before Kata did. He was sorted into Slytherin. When kata followed him, her goal was to figure out Magic. This exciting, new, thing. She wanted to learn how it worked, and everything about it.