4 occurrences in 4 dictionaries
Reference: Agee
Easton
fugitive, the father of Shammah, who was one of David's mighty men (2Sa 23:11)
Fausets
Hastings
The father of Shammah, one of 'the Three' (2Sa 23:11).
Morish
A'gee
The Hararite, father of Shammah, one of David's mighty men. 2Sa 23:11.