Karsten, you wrote, "What I’m also telling you is that I would only invest more time in this project if these people were my own family!"
You have done more than one ever could have imagined! How amazing that you've uncovered all that detail and provided such a portrait of the family. Although this isn't my question, my thread, I thank you very much! for the enjoyable experience of admiring your incredible findings and investigating this family history with you and Kaj. What treasure!
I would guess Kaj has bowed out; me too.
Diana, below, I asked this question of you (you did not answer): "Do you know anything about the remaining 5 siblings?
Jens Peter Nielsen, born 2. Oct. 1888
Andreas Nielsen, born 2. Sep. 1896
Frederik Nielsen, born 15. June 1898
Margrethe Nielsen, born 6. June 1906
Maren Nielsen, born 3. Dec. 1907"
So that summarizes the project ahead if you choose to continue on to learn if you have living cousins in Denmark. Karsten made a good start at it. Happy hunting.