Nebaioth
The firstborn son of Ishmael, and the brother whose sister Mahalath Esau married. His name heads the list of Ishmael's twelve princes, and Isaiah pairs the flocks of Kedar and the rams of Nebaioth as offerings that would come up with acceptance on God's altar. The tribe is generally associated with northern Arabia.
What we know — and how we know it
Where in scripture
Genesis1 ChroniclesIsaiahThese are the names of the sons of Ishmael, by their names, according to the order of their birth: the firstborn of Ishmael, Nebaioth, then Kedar, Adbeel, Mibsam,
Genesis 25:13 — Firstborn of Ishmael
Esau went to Ishmael, and took, besides the wives that he had, Mahalath the daughter of Ishmael, Abraham’s son, the sister of Nebaioth, to be his wife.
Genesis 28:9
and Basemath, Ishmael’s daughter, sister of Nebaioth.
Genesis 36:3
These are their generations: the firstborn of Ishmael, Nebaioth; then Kedar, Adbeel, Mibsam,
1 Chronicles 1:29
All the flocks of Kedar will be gathered together to you. The rams of Nebaioth will serve you. They will be accepted as offerings on my altar; and I will beautify my glorious house.
Isaiah 60:7
Scripture quotations are from the World English Bible, a public-domain translation.