1 Kings 4:15
Ahimaaz was in Naphtali; he also took Basmath the daughter of Solomon to wife:
Cross-reference
1 Kings 4:11
Parallel
1 Kings 4:11 lists another son-in-law of Solomon, Ben-Abinadab, governing Naphoth Dor — parallel pattern of appointing royal sons-in-law as district governors.
Joshua 19:32–39
Historical context
Joshua 19:32-39 describes the land allotted to Naphtali — the same region governed by Ahimaaz here.