I am a middle child in between two sisters, each approximately a year apart from me. My mother always preferred girls to boys, and as such would treat me as always in the wrong. This went as far as to when she would catch them in the act of doing something wrong, would punish me instead.
This culminated into what I like to refer to as kicking me out of the house when I was ten years old. In essence she called one of her ex husbands (not my father and a rather nasty divorce) and told him that if he didn't come and take me in, she was putting me into a boy's home. So this man uplifted his life from the several states away that he moved and took me in for a few months. I was then bounced from house to house until I landed a semi permanent residence with one of my aunts.
TL;DR least favorite child and got kicked out of the house at 10 years old.