The term is hyphenated, as great-great-grandfather(grandfather's grandfather).
your great great great great grandfather
Your great great grandfather.
The 4th Great Grandson is the Great Great Great Great Grandson of the individual. Son Father Grandfather Great Grandfather Great Great Grandfather Great Great Great Grandfather Great Great Great Great Grandfather
Your great, great grandfather's son could be either your great grandfather or your great grand uncle, depending on whether his son was your grandfather or not.
Your great great grandfather.
Your grandfather's father is your great grandfather.
Great is a separate word and grandfather is one word great grandfather or great great grandfather
If your great great grandfather was the brother of someone else's great great grandfather then you and that other person are fourth (4th) cousins.
your great grandfather Your Great Great Grandfather? xx
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 grandfather's brother is your great great uncle.