Alphons Bobrownitzki and Engel Veldmann married in 1919 in Schoterland. Besides the here mentioned son Herman Alphons they also had a son Sigmund.
Stadsarchief Amsterdam, archiefkaart Alphons Bobrownitzki
In the Parelduiker 14, no. 5 (2009). Cornelissen analyses the background of the book De ondergang van de familie Boslowits by Gerard Reve. The Bobrownitzki family was model for the family Boslowits.