Your uncle's son's aunt's nephew's grandfather is your which relation ?

Your

Uncle's

Son's

Aunt's

Nephew's

Grandfather

is your GRANDUNCLE !!

What relation is your sister's grandmother's grandson's son to you ?

What relation is your brother's mother's sister's niece's son to you ?

What relation is your grandmother's grandson's sister's aunt's father to you ?

What relation is your mother's cousin's son's daughter in law to you ?

What relation is your father's daughter's brother's grandfather to you ?

What relation is your brother's father's daughter's uncle to you ?