Judges 8:31 in the King James Version
And his concubine that was in Shechem, she also bare him a son, whose name he called Abimelech.
Context
30 Gideon had seventy sons conceived from his body, for he had many wives.
31 His concubine who was in Shechem also bore him a son, and he named him Abimelech.
32 Gideon the son of Joash died in a good old age, and was buried in the tomb of Joash his father, in Ophrah of the Abiezrites.