Originally Posted by
SPN Lifer (Post # 4)
The technical term for this "II" is a "generational suffix".
Originally Posted by
VegasGambler (Post # 6)
I don't know when "Jr" became "II". It used to be that the numbers started at "III".
When a son is named after his father, Junior ("Jr.") is used. When named after a grandfather, great-grandfather, uncle, or great-uncle, that is when "II" is used. Such situations are less common.