Nahshon. David's family ancestry is defined in Matthew 1:1-6.
Matthew 1:4c-6
"Nahshon the father of Salmon,
Salmon the father of Boaz,
Boaz the father of Obed,
Obed the father of Jesse,
and Jesse the father of King David."
SALMON
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.
Marcus Agrippa was Nero's great grandfather. He was the grandfather of Nero's mother.
16th great grandfather
Granpa great to the fourth power, or 4-great grandfather
King Davids great grandfather was Boaz.(Ruth 4:21+22)
SALMON
The term is hyphenated, as great-great-grandfather(grandfather's grandfather).
your great great great great grandfather
Your great great grandfather.
Boaz and Ruth
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.