Judges 1:13

And Othniel the son of Kenaz, Caleb’s younger brother, took it: and he gave him Achsah his daughter to wife.

Cross-reference

Judges 3:9 identifies Othniel as Israel's first judge, showing his later leadership after this victory.

Joshua 15:16 gives the identical account of Caleb's offer, with the same wording — a direct parallel.

Joshua 15:17 records Othniel's capture and receiving Achsah, exactly matching this verse.