Your sister's aunt's brother's daughter is your which relation ?

Your

Sister's

Aunt's

Brother's

Daughter

is your COUSIN !!

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

What relation is your mother's husband's daughter's brother in law to you ?

What relation is your mother's sister's nephew's brother in law to you ?

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

What relation is your cousin's sister's mother's nephew to you ?

What relation is your grandmother's grandson's mother's daughter's brother to you ?