If you know his name try Ancestry .com.....very helpul website.
Your Grand father's Grandfather5's Grandfather's Grandfather's Grandfather's Grandfather's Grandfather's Great Grandfather created History.
The term is hyphenated, as great-great-grandfather(grandfather's grandfather).
your great great great great grandfather
You can get this book about family history
He would be the III because he is the third in the blood line with the name. If you look at the history of European kings, this often happened.
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
Your father's brother is your uncle. Your Grandfather's brother is your great uncle. Your Great Grandfather's brother is your great great uncle.