4 occurrences in 4 dictionaries
Reference: Shammai
Fausets
2. Of Maon (1Ch 2:44-45). 1Ch 2:3. Brother of Miriam and Ishbah, all three being sons of" Bithiah the daughter of Pharaoh whom Mered took" (these words ought to be transposed after "Jalon": 1Ch 4:17-18). (See BITHIAH; MERED; JEHUDIJAH.)
Hastings
Morish
Shamma'i
1. Son of Onam, a descendant of Judah. 1Ch 2:28,32.
2. Son of Rekem, and father or founder of Maon. 1Ch 2:44-45.
3. Brother of Miriam, in an obscure genealogy of Judah. 1Ch 4:17.
Smith
Sham'ma-i
(desolate).
1. The son of Onam.
2. Son of Rekem.
3. One of the descendants of Judah.