Genesis 36:3

Ishamael's daughter Basemath (who was Nebaioth's sister).

so he went to Abraham's son Ishmael and married Ishmael's daughter Mahalath, who was the sister of Nebaioth.

Here's a list of the names of Ishmael's sons, recorded by their names and descendants: Nebaioth was the firstborn, followed by Kedar, Adbeel, Mibsam,

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