Eliab

David's brother, in the time of the United Monarchy · Tribe of Judah · named in 5 verses

the name means God of (his) father Strong's Lexicon

Eliab was the eldest brother of King David and the son of Jesse.

From Easton's Bible Dictionary

To whom God is father. (1.) A Reubenite, son of Pallu (Num. 16:1, 12; 26:8, 9; Deut. 11:6).

Easton's Illustrated Bible Dictionary, 1897 — public domain, quoted in full and unedited.

Children Abihail

From STEPBible's TIPNR genealogy data. A relationship the data marks uncertain is not shown here.

First named at 1 Samuel 16:6.

1 Samuel 16:6 When they arrived, Samuel saw Eliab and said, “Surely here before the LORD is His anointed.”
1 Samuel 17:13 The three older sons of Jesse had followed Saul into battle: The firstborn was Eliab, the second was Abinadab, and the third was Shammah.
1 Samuel 17:28 Now when David’s oldest brother Eliab heard him speaking to the men, his anger burned against David. “Why have you come down here?” he asked. “And with whom did you leave those few sheep in the wilderness? I know your pride and wickedness of heart—you have come down to see the battle!”
1 Chronicles 2:13 Jesse was the father of Eliab his firstborn; Abinadab was born second, Shimea third,
2 Chronicles 11:18 And Rehoboam married Mahalath, who was the daughter of David’s son Jerimoth and of Abihail, the daughter of Jesse’s son Eliab.