Ephah was a son of Midian, who in turn was the son of Abraham and his other wife Keturah. Ephah became the ancestor of a Midianite clan that bore his name, which is later mentioned in connection with trade and camel caravans in prophetic texts. The name Ephah also appears in other contexts in the Old Testament, including as a person from the Caleb lineage.
6Caravans of camels will cover you, young camels of Midian and Ephah; all of them will come from Sheba, bearing gold and frankincense, proclaiming the praises of the LORD.
Abraham had several sons with Keturah after Sarah's death, including Midian who became the father of Efa. Abraham gave gifts to these sons and sent them eastward.
6But to the sons of his concubines Abraham gave gifts, and while he was still alive he sent them away from his son Isaac, eastward to the land of the east.