Bitter was the son of unknown parents. The date and place of his birth have not been found.
He had three marriages/partners. His first wife was Katharina van Gemen. They were married, but the date and place have not been found. They had no known children.
His second wife was Beatrix van Zuylen-Anholt, who he married on 1 MAR 1379. The place has not been found. They had no known children.
His third wife was Katharina Stecke. They were married, but the date and place have not been found. They had no known children.
Note 1
Johan von Raesfeld, b. Bef 1319, d. Aft 1352 & Blitrudis Bitter von Steynhus, d. Aft 1318