Hello again marpost65,
Not all is in Dutch. Here's the English version of the GenLias site (
http://www.genlias.nl/en/page0.jsp) and the records can be browsed at Familysearch.org (
https://www.familysearch.org/search/image/show#uri=https%3A/...).
But the records will be in Dutch, of course. :-)
Using the GenLias site, searching both for "Jan Post" and for "Aaltje Bruggen", I got 10 hits, starting with their marriage in Kampen, 21 Jun 1855, and ending with the death of their son Derk in Zwolle on 31 Mar 1938.
If you take the last marriage in that list, e.g., that of their son Derk in Heerde, 30 Apr 1904 (nr. 19), and look it up (using
http://www.genver.nl/gl/0246.htm), you'll find the document here:
https://www.familysearch.org/pal:/MM9.3.1/TH-1-159390-618460....
The record states that Derk is a widower, of the late Willempje van der Stege, and a son of the late Jan Post and the late Aaltje van Bruggen. So Jan and Aaltje died before 1904.
The annexes (huwelijkse bijlagen) to this record should (but not always do) contain a copy of the death record of the parents. Using the same index (
http://www.genver.nl/gl/0246.htm) I found the following records:
https://www.familysearch.org/pal:/MM9.3.1/TH-1-16364-18321-1....
It starts with Derks birth, the second page is a legal document with no genealogical information, nr. 3 is a copy of the death record of Derks first wife, followed by a legal document with no genealogical information, nr. 6 is a document about the birth of the bride, and then it stops: no information about Jan Post!
The following record in Genlias was the marriage of son Jacob, Zwollerkerspel 26 Mar 1896 (nr. 14). The record (
https://www.familysearch.org/pal:/MM9.3.1/TH-1-11324-28347-4...) states that Jan was living in IJsselmuiden and that Aaltje was deceased. So Jan died between 1896 and 1904, and Aaltje died before 1896.
The annexes are found here:
https://www.familysearch.org/pal:/MM9.3.1/TH-1-15353-17465-4.... The first document, about Jacob's military service (
https://www.familysearch.org/pal:/MM9.3.1/TH-1-15353-17412-7...), states that he had to do service (a number of young men was selected each year, using a kind of lottery system). But he did not do it, he found (paid) another young lad to do it for him.
The document also says that Jan was living in IJsselmuiden in 1883, and that Aaltje had died in Kampen before that time.
So now we suspect that Jan died in IJsselmuiden, between 1896 and 1904. Using
http://www.genver.nl/, then
http://www.genver.nl/indexov.htm, then
http://www.genver.nl/ov/0191.htm, and then going to the index of the civil registry (Burgerlijke Stand, BS) I found a reference to Jan Post:
https://www.familysearch.org/pal:/MM9.3.1/TH-1-19079-4509-46....
Then looking up the record (
https://www.familysearch.org/pal:/MM9.3.1/TH-1-19239-77951-6...) confirmed that it was him. It reads
IJsselmuiden, death record, 7 May 1902, nr. 11
Jan Post, 78 years old, no profession, born in Kampen, living in IJsselmuiden, son of the late Hendrik Post and the late Dirkjen Knol, husband of Willemina van Weeghel, has died on 6 May 1902 in the house in IJsselmuiden known as quarter 1, nr. 87.
Kind regards,
Lars Roobol
http://www.familyaffairs.nldeath records ("overlijden")