Folke 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 Margareta Arvidsdotter Sparre. They were married, but the date and place have not been found. They had no known children.
His second wife was Ramborg Stefansdotter Ukv. They were married, but the date and place have not been found. They had no known children.