Name: Joanna Lannister, "Lion Cub of Casterly Rock"
Age: 15
House/Affilitation: House Lannister
Appearance:
Biography: Joanna Lannister in many ways hadn't expected to partake in the life she had - as born a woman and though first-child for the seat of Casterly Rock - she was behind inheritance to her brothers Tyland and Jason Lannister.
Thus while she was the eldest, she mostly partook in the different life of House Lannister - far from becoming a lady or handmaiden, she instead used her fame and fortune to train. Already born young and with a higher vitality than even her brothers Joanna played in the same games as her brothers. As her dreams too were to become like Rhaenys Targaryen, a warrior and a woman at that. This was aided by Joanna being born stronger and taller than most women.
Still life for Joanna wasn't sunshine, as numerous times she denied and refused any courtship that her father had engaged her in - so much so, that some rumored her of liking only women and other whispers. So much so, that when Joanna was five-and-ten old - she was given a choice of 'doing her duty' and stopping her foolish dreams or being warded elsewhere.
As such, Joanna was soon enough sent to King' Landing as a handmaiden for Rhaenyra Targaryen.