Here is a picture from Tresoar's Flickr page of the village of Hallum. This is from a collection of engravings called "Vaderlandsche Gezigten" published by K.F. Bendorp and J. Bulthuis around 1790. And is that guy doing what I think he's doing next to that building?
I haven't had the chance to visit the Netherlands yet, but I did do a quick search for pics of Hallum and found this one that is of a similar view of a street looking toward the church.
From their marriage they had at least 8 children, all baptized in Hallum:
1. Jan b: bef 1 Nov 1722
2. Grietje b: bef 9 Apr 1724
3. Douwe b: bef 11 Nov 1725
4. Froukje b: bef 25 May 1727
5. Trijntje b: bef 13 Mar 1729
6. Barteld b: bef 16 Apr 1730
7. Jacob b: bef 1 Feb 1733
8. Jetske b: bef 11 Jul 1734
For more info on their descendants, check out my stuff on World Connect on Rootsweb.com