Your cousin's aunt's daughter's brother+in+law is your which relation ?

Your

Cousin's

Aunt's

Daughter's

Brother in law

is your BROTHER IN LAW !!

What relation is your brother's cousin's aunt's niece's daughter to you ?

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

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

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

What relation is your aunt's cousin's daughter's sister's wife to you ?

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