Judges 8:31

And his concubine who was in Shechem also bore him a son, whom he named Abimelech.

Genesis 16:15

So Hagar gave birth to Abram’s son; and Abram named his son, to whom Hagar gave birth, Ishmael (God hears).

Genesis 20:2

Abraham said [again] of Sarah his wife, “She is my sister.” So Abimelech king of Gerar sent and took Sarah [into his harem].

Genesis 22:24

Nahor’s concubine, whose name was Reumah, gave birth to Tebah and Gaham and Tahash and Maacah.

Judges 9:1-5

Now Abimelech the son of Jerubbaal (Gideon) went to Shechem to his mother’s relatives, and said to them and to the whole clan of the household of his mother’s father,

Judges 9:18

but you have risen against my father’s house today and have murdered his sons, seventy men, on one stone, and have made Abimelech, son of his maidservant, king over the people of Shechem, because he is your relative—

Treasury of Scripture Knowledge

Summary

And his concubine that was in Shechem, she also bare him a son, whose name he called Abimelech.

Bible References

Concubine

Judges 9:1
Now Abimelech the son of Jerubbaal (Gideon) went to Shechem to his mother’s relatives, and said to them and to the whole clan of the household of his mother’s father,
Genesis 16:15
So Hagar gave birth to Abram’s son; and Abram named his son, to whom Hagar gave birth, Ishmael (God hears).
Genesis 22:24
Nahor’s concubine, whose name was Reumah, gave birth to Tebah and Gaham and Tahash and Maacah.