Caleb’s concubine Ephah was the mother of Haran, Moza and Gazez. Haran was the father of Gazez.

Caleb’s concubine Maakah was the mother of Sheber and Tirhanah.

All these were the sons of David, besides his sons by his concubines. And Tamar was their sister.

Manasseh

The descendants of Manasseh: Asriel was his descendant through his Aramean concubine. She gave birth to Makir the father of Gilead.

Rehoboam loved Maakah daughter of Absalom more than any of his other wives and concubines. In all, he had eighteen wives and sixty concubines, twenty-eight sons and sixty daughters.

In the evening she would go there and in the morning return to another part of the harem to the care of Shaashgaz, the king’s eunuch who was in charge of the concubines. She would not return to the king unless he was pleased with her and summoned her by name.

Sixty queens there may be, and eighty concubines, and virgins beyond number;

but my dove, my perfect one, is unique, the only daughter of her mother, the favorite of the one who bore her. The young women saw her and called her blessed; the queens and concubines praised her.

While Belshazzar was drinking his wine, he gave orders to bring in the gold and silver goblets that Nebuchadnezzar his father had taken from the temple in Jerusalem, so that the king and his nobles, his wives and his concubines might drink from them.

So they brought in the gold goblets that had been taken from the temple of God in Jerusalem, and the king and his nobles, his wives and his concubines drank from them.

Instead, you have set yourself up against the Lord of heaven. You had the goblets from his temple brought to you, and you and your nobles, your wives and your concubines drank wine from them. You praised the gods of silver and gold, of bronze, iron, wood and stone, which cannot see or hear or understand. But you did not honor the God who holds in his hand your life and all your ways.