|Easton's Bible Dictionary|
The father of Gaddi, who was one of the twelve spies (Numbers 13:11).
Int. Standard Bible Encyclopedia
su'-si, soo'-si (cuci): Father of Gaddi, one of the spies, who represented the tribe of Manasseh (Numbers 13:11). See Gray, HPN, 92.
Susi (1 Occurrence)
Numbers 13:11 Of the tribe of Joseph, namely, of the tribe of Manasseh, Gaddi the son of Susi. (WEB KJV JPS ASV BBE DBY WBS YLT NAS RSV NIV)