Helmich Aartsz, christened in Oldebroek on December 19, 1675, died before February 7, 1732, son of Aert Janssen Westert and Mechteltjen Willems.

He was married in Oldebroek on February 12, 1702 to his cousin
Lubbetjen Francksz, christened in Oldebroek on November 19, 1682, died circa 1720, daughter of Franck Jansen Oostert and Grietje Lubbers.