Family Riddle

I'm your grandfather's sister's daughter. Who am I?

I'm your daughter's brother's grandfather. Who am I?

I'm your daughter's brother's daughter. Who am I?

I'm your cousin's mother's brother. Who am I?

I'm your grandchild's father's brother. Who am I?

I'm your sister-in-law's daughter's cousin. Who am I?

You are my brother, but I'm not your sister. Who am I?

A doctor and a boy were fishing. The boy was the doctor's son, but the doctor was not the boy's father. Who was the doctor?

Your mother's brother's only brother-in-law is asleep on your couch. Who is asleep on your couch?

I'm your brother's wife's daughter. Who am I?

In which way would your mother's brother's brother-in-law related to you?

I'm your brother's father's daughter. Who am I?