In Shechem; she dwelt there, and he oft came thither, either to execute judgment, or upon other occasions. Abimelech, i.e. my father the king; so he called him, probably to gratify his concubine, who desired it either out of pride or design.
Related Commentaries of Judges 8:31
Judges 8:31
31 And his concubine that was in Shechem, she also bare him a son, whose name he calledi Abimelech.