1 Chronicles 9:7 - Joseph Benson’s Commentary on the Old and New Testaments

Sallu the son of Meshullam Who is mentioned, but described by other parents, (Nehemiah 11:7,) or at least by persons under other names. Possibly these were his more immediate, and those his more remote parents: or he might be begotten by the one, and adopted by the other. For it is certain that men are sometimes, in Scripture, called the sons of those that adopted them, or whose right of inheritance fell to them.