Hij is aangegeven als Johannes Gerardus Lammers en is bij het huwelijk van zijn ouders erkend.
(1) He is married to Elisabeth Johanna Rosier.
They got married on June 22, 1887 at Leiden (ZH) , he was 23 years old.
(2) He is married to Alida Heijn.
They got married on December 10, 1913 at Amsterdam (NH) , he was 50 years old.Source 2
(3) He is married to Gijsbertha van Veenendaal.
They got married on November 7, 1917 at Amsterdam (NH) , he was 54 years old.Source 3
Johannes Gerardus Ouwerkerk | ||||||||||
(1) 1887 | ||||||||||
Elisabeth Johanna Rosier | ||||||||||
(2) 1913 | ||||||||||
Alida Heijn | ||||||||||
(3) 1917 | ||||||||||
Gijsbertha van Veenendaal |