Abinadab

Then Yishai called Avinadav and presented him to Sh'mu'el; but he said, "ADONAI hasn't chosen this one either."

Yishai's three oldest sons had followed Sha'ul to battle; the names of his three sons who went to battle were Eli'av the firstborn, next to him Avinadav, and the third Shammah.

and Yishai fathered Eli'av his firstborn, Avinadav second, Shim'a third,