He is your sister's son, so he is your...
nephew
uncle
cousin
She is your mother's mother, so she is your...
grandmother
sister
mother
She is your daughter's daughter, so she is your...
granddaughter
daughter
sister
She is her mother's sister, so she is her...
cousin
aunt
sister
He is not her father. He is her father's brother, so he is her...
nephew
cousin
uncle
They are married and she is his...
sister
wife
aunt
Your wife's sister is your...
sister in law
aunt
niece
Your wife's brother is your...
uncle
brother in law
cousin
He is your wife's father, so he is your...
mother in law
grandfather
father in law
He is her...
grandmother
father
grandfather
They have the same parents. She is her...
nephew
sister
cousin
He is your son's son, so he is your...
grandparent
grandson
granddaughter
They have the same parents. He is her...
uncle
husband
brother
He is her...
father
cousin
brother
His father is your mother's brother so he is your...
niece
nephew
cousin
They are married and he is her...
vvv
husband