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Your grandfather's sister is your great aunt.
What else can I help you with?
What Relation is my Grandfathers Sisters Sons Daughters niece to me?
Most likely they would not be related to you
What relation is your grandfathers nieces son to you?
Your grandfather's niece is a first cousin of one of your parents. Her son is your second cousin.
What relation is your godfather's niece to you?
What is my godfathers niece to me
What relation is your great great grandfathers great niece to you?
For clarity, lets call your great great grandfather's niece "the niece". The relationship sequence: (1) The niece is the daughter of your great great grandfather's sibling (2) The niece is a 1st cousin of one of your great grandparents (3) The niece is a 1st cousin once removed of one of your grandparents (4) The niece is a 1st cousin twice removed of one of your parents (5) The niece is your 1st cousin three times removed
What relation niece's brother to you?
Your niece's brother is your nephew.
What relation is your grandfathers sisters son to you?
cousin
What relation is your son to your niece?
Your son and your niece are first cousins.
What relation is your grandfathers nephews son to you?
3rd cousin
What relation would it be to me if it was my brother-in-law's niece?
Nothing. Your niece in law. Your brother in laws niece.
What relation to you is your aunts granddaughter?
your niece
What relation is your daughter to your niece?
cousins
What relation is your great grandfathers dad to you?
Your great great grandfather.
