Jan Vorstenburg, born in Harlingen on November 5, 1886, son of Cornelis Vorstenburg (butcher and butcher's man) and Pietje Langedijk, died in Harlingen on August 22, 1912, aged 25 years.

Jan was married in Harlingen on May 30, 1907, at the age of 20 to
Aafke Feenstra (aged 16 years), born in Harlingen on August 2, 1890, daughter of Auke Feenstra and Doutzen Windsma, died there on May 1, 1952, buried there, aged 61 years.
Aafke was married afterwards in Harlingen on December 11, 1913, at the age of 23 to Tjerk Tichelaar (aged 28 years), born in Harlingen on January 7, 1885, son of Lodewijk Tichelaar (worker and workman) and Eelkje Geldersma, casual labourer and 2nd fireman gasworks, died in Harlingen on August 29, 1979, buried there, aged 94 years.