Sije Boonstra, born in Harlingen on March 8, 1864, son of Sjouke Boonstra (longshoreman) and Hijlkje de Vries, bloatercurer, dock hand, docker and transport worker, died in Harlingen on September 15, 1923, aged 59 years.
Sije was married in Harlingen on June 4, 1888, at the age of 24 to
Grietje Tigchelaar (aged 24 years), born in Harlingen on May 27, 1864, daughter of Klaas Gerrits Tigchelaar (dock hand, workman and dock hand) and Grietje Dirks Sleeper van Arum (maid-of-all-work), maid servant, died in Harlingen on December 6, 1954, aged 90 years.
From this marriage:
- 1 : Sjouke Boonstra, born in Harlingen on December 13, 1888, fisher, died in the year 1911, aged 23 years.
- 2 : Klaas Boonstra, born in Harlingen on July 29, 1890, casual labourer, fisher and workman, died in Groningen on March 29, 1948, aged 57 years.
Klaas was married in Harlingen on August 1, 1912, at the age of 22 to Anna Vellinga (aged 22 years), born in Harlingen on June 27, 1890, daughter of Tjerk Vellinga (merchant) and Sijtske Kalma, maid servant.
- 3 : Ynse Boonstra, born in Harlingen on January 29, 1893, died there on July 13, 1893, aged 165 days.
- 4 : Grietje Boonstra, born in Harlingen on September 6, 1894, 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.
- 6 : Harmke Boonstra, born in Harlingen on February 15, 1898, died in Enschede on July 5, 1978, aged 80 years.
Harmke was married in Amsterdam on July 17, 1924, at the age of 26 to Cornelis Hendrik Willem de Bois (aged 28 years), born in Steenwijk on June 19, 1896, son of Cornelis Hendrik Willem de Bois and Elisabeth Maria Sluijter, died in Oldenzaal on August 1, 1975, aged 79 years.
- 7 : Mina Boonstra, born in Harlingen on July 2, 1899, pensionhoudster, died in Amsterdam on April 11, 1977, aged 77 years.
Mina was married in Amsterdam on March 1, 1923, at the age of 23 to Johannes Bruijntjes (aged 31 years), born in Amsterdam on February 14, 1892, son of Johannes Bruijntjes and Johanna Maria Wilhelmina Wiesener, driver and chauffeur expeditiebedrijf, died in Amsterdam on August 17, 1968, aged 76 years.
- 8 : Sije Boonstra, born in Harlingen on November 29, 1901, died on November 24, 1902, aged 360 days.
- 9 : Johanna Boonstra, born in Harlingen on December 25, 1902, died there on October 21, 1966, aged 63 years.
Johanna was married in Harlingen on June 14, 1928, at the age of 25 to Engele van Dieken (aged 28 years), born in Sexbierum on September 8, 1899, caual labourer, miller and handlanger Hoogovens, died in Harlingen on December 29, 1976, aged 77 years.
- 10 : Hielke Boonstra, born in Harlingen on March 31, 1905, fish curer and longshoreman, died in Leeuwarden on January 11, 1968, aged 62 years.
Hielke was married in Harlingen on May 16, 1929, at the age of 24 to N.N..
- 11 : Douwe Boonstra, born in Harlingen on September 24, 1906, warehouseman, transport worker, caual labourer and driver, died in Enkhuizen on September 11, 1983, aged 76 years.
Douwe was married in Enkhuizen on March 7, 1929, at the age of 22 to N.N..