🔼The name Ben-ammi in the Bible
The only Ben-ammi in the Bible is the incestuous son of Lot and his younger daughter, who becomes the patriarch of the "sons" of Ammon, also known as the Ammonites (Genesis 19:38). Lot is the son of Abraham's brother Haran and it's curious that both the daughters and the wife of this prominent figure remain nameless, also since Lot's daughters are matriarchs of enormous nations. The oldest daughter of Lot bears her father a son she names Moab, and he becomes the patriarch of the Moabites.
🔼Etymology of the name Ben-ammi
The name Ben-ammi consists of two elements. The first part is the word בן (ben), meaning son:
For a meaning of the name Ben-ammi, NOBSE Study Bible Name List goes with the meaning of the word am of kinsman and reads Son Of My Kinsman. Alfred Jones (Dictionary of Old Testament Proper Names) sees more in am's meaning of nation and proposes Son Of My Nation. BDB Theological Dictionary reads Son Of My People.