Wolfhart was the son of unknown parents. The date and place of his birth have not been found.
He had two marriages/partners. His first wife was Johanna von Osterwitz. They were married, but the date and place have not been found. Their only known child was Johann Christoph (c1425-1481).
His second wife was Anna von Hanau. They were married, but the date and place have not been found. They had no known children.