Alje Knol became an apprentice to bicycle mechanic Werkman in Uithuizen (before 1920).
Found death of henderik on 1 Jan 1964 - aged 73, wife Anje Werkman. So this henderik was born 1891 in Utihuizen and lived in Uithuizen.
https://www.allegroningers.nl/zoeken-op-naam/deeds/fcb39d64-bb48-ff23-dca4-a5bb907cda54?person=1629319e-b3bb-80e0-9ae7-0d2f8cdf3509
Vader Harm Werkman
Moeder Albertje Kremer
vs Egge's comment about disappearing during the war...
He is married to Anje Werkman.
They got married on May 9, 1913 at Uithuizen, Gemeente Eemsmond, Groningen, Netherlands , he was 23 years old.Source 2
Fietsenmaker Hendrik Werkman (1890-1964), Hoofdstraat west nr. 96 in Uithuizen, was in 1913 gehuwd met Anje Werkman. Dit echtpaar was gereformeerd. Anje's zuster Riek Werkman huwde later in 1924 met de oudste broer van Alje Knol.
Alje Knol was an apprentice to bicycle mechanic Henderik Werkman in Uithuizen.
Hendrik Werkman (1890-1964), Hoofdstraat west no. 96 in Uithuizen, was married in 1913 to Anje Werkman. This couple was Reformed. Anje's sister Henderika (Riek) Werkman married Pieter Knol (Alje's older brother) in 1924.