Your great grandfather!
He is you grandfather in law
He would be your paternal great grandfather
auntie
Your grandfather's brother's daughter is your first cousin, once removed.
Your great grandfather's nephew was your grandfather's first cousin. You are two generations removed from your grandfather and his cousin. Therefore you and your great grandfather's nephew are first cousins, twice removed.
Your grandfather's great great niece is your second cousin, once removed
Your great grandfather's nephew was your grandfather's first cousin. You are two generations removed from your grandfather and his cousin. Therefore you and your great grandfather's nephew are first cousins, twice removed.
Your great great grandfather.
fourth cousin
Babar is the grandfather of Akbar
Your grandfather's niece is a first cousin of one of your parents. Her son is your second cousin.
The great grandson of your great grandfather's brother is your third cousin