Judges 8:30-35

He had seventy sons born to him, for he had many wives. He also had a concubine in Shechem, who gave birth to a son, whom he named Abimelech. Gideon died when he was very old, and he was buried in the grave of his father, Joash, at Ophrah in the land of the clan of Abiezer. As soon as Gideon died, the Israelites prostituted themselves by worshiping the images of Baal, making Baal-berith their god. They forgot the LORD their God, who had rescued them from all their enemies surrounding them. Nor did they show any loyalty to the family of Jerub-baal (that is, Gideon), despite all the good he had done for Israel.