Hi Sharon
He was apparently born between 23rd and 26th Sep 1672 according to
SAG v 8 (Pi-Q) p 261
b1 Johannes (Jan Harmensz) ≈ Swellendam 23/6.9.1674
† c. 1730/3 x 24.7.1712 Clara HERBST ≈ 1687 † voor
18.2.1714 d.v. stamvader Johann Herbst v. Bremen en
Lijsbeth Sanders v.d.K.
So no definate date!