Charles Ellicott Commentary Genesis 29:5

"And he said unto them, Know ye Laban the son of Nahor? And they said, We know him." — Genesis 29:5 (ASV)

Laban the son of Nahor. —Laban was really the son of Bethuel and grandson of Nahor; but Nahor was the founder of the family, as he was the original immigrant from Ur who came to supply Abraham’s place on his departure.