From there they advanced against the people living in Debir1 (formerly called Kiriath Sepher).
References for Judges 1:11
And Caleb said, "I will give my daughter Acsah in marriage to the man who attacks and captures Kiriath Sepher."
Othniel son of Kenaz, Caleb's younger brother, took it; so Caleb gave his daughter Acsah to him in marriage.
One day when she came to Othniel, she urged him to ask her father for a field. When she got off her donkey, Caleb asked her, "What can I do for you?"
References for Judges 1:14
She replied, "Do me a special favor. Since you have given me land in the Negev, give me also springs of water." Then Caleb gave her the upper and lower springs.2
References for Judges 1:15