Judges 1:11-13

And from thence he went against the inhabitants of Debir: and the name of Debir before was Kirjathsepher:

And Caleb said, He that smiteth Kirjathsepher, and taketh it, to him will I give Achsah my daughter to wife.

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