Dieuwke married Jisk Wip (also known as Julius) on 1 May 1922 in Sneek. I do not have a whole lot of information about their life together, but apparently they enjoyed sailing as I have a few of pictures of them doing that. Perhaps they used that summer activity to celebrate their birthdays, as their 3 sons we all born in the summer:
Jules Hildrbrand b. 12 Jul 1923
Jetze b. 19 Jun 1926
Theodorus b. 12 Jun 1932
The boy sitting is not one of Dieuwke's sons, and there is no mention on the back of the picture as to who it is. All 3 sons grew up and were married. Jetze appears to have joined the navy based on a couple of pictures of him. Perhaps he served in some capacity during World War II? Maybe the sailing he did as a child prompted him to try it as a career? I don't really have any other information on their children at this time.
Dieuwke lived to be 1 month shy of 60 years old, and passed away on 6 Mar 1958 in Sneek. You can find a few more pictures of their family that I have scanned on my Flickr page.