Boyd’s Bible Dictionary:
(mouth). Son of Issachar (Gen. 46:13). Pua (Num. 26:23). Puah (1 Chron. 7:1).
Concise Bible Dictionary:
Son of Issachar and ancestor of the PUNITES (Gen. 46:13). He is called PUA in the AV of Numbers 26:23, though the Hebrew is the same, and is apparently identical with PUAH in 1 Chronicles 7:1.
Jackson’s Dictionary of Scripture Proper Names:
he was scattered (as by a puff, a blow)