Grietje Boonstra, born in Harlingen on September 6, 1894, daughter of Sije Boonstra (bloatercurer, dock hand, docker and transport worker) and Grietje Tigchelaar (maid servant), died in Amsterdam on May 18, 1980, aged 85 years.

Grietje was married in Amsterdam on April 25, 1917, at the age of 22 (1) to (and divorced in Amsterdam on February 17, 1941 from)
Laurens den Boer (aged 19 years), born in Passaic [USA] on June 22, 1897, son of Krijn den Boer and Antje Hoedemans, kraandrijver, died in Amsterdam on October 2, 1964, aged 67 years.
Laurens was married afterwards in Amsterdam on May 11, 1944, at the age of 46 to (and divorced in Amsterdam on September 7, 1945 from) Maria Bastenhof (aged 39 years), born in Amsterdam on October 18, 1904. Maria was widow of Borgman. Laurens was married afterwards in Amsterdam on November 9, 1948, at the age of 51 to Margarete Elisabeth Schafer (aged 53 years), born in Waldkathen [Dl] on May 20, 1895.

Grietje was married in Amsterdam on December 18, 1941, at the age of 47 (2) to
Johannes Jacobus Henricus Koppelman (aged 46 years), born in Amsterdam on September 22, 1895, died there on August 11, 1970, aged 74 years.