Your uncle's son is your
Sister
Your aunt's brother is your
Your husband's mother is your
Aunt
Uncle
Niece
Brother
Your father's son is your
Grandmother
Mother-in-law
Your cousin's mother is your
Brother-in-law
Your sister's husband is your
Cousin
Your nephew's mother is your
Your aunt's father is your
Father
Your mother's husband is your
Grandfather
Your brother's daughter is your
Your dad's mom is your
