Roelof Gerrits Tigchelaar, born in Midlum on January 9, 1870, son of Gerrit Tigchelaar (worker, tilebaker and tilebaker's hand) and Jetske Folkerts van der Vliet (woman worker), potatodealer, workman, shopkeeper, bargeman, worker, workman and earthenware baker, died in Harlingen on January 3, 1932, aged 61 years.

Roelof was married in Harlingen on May 31, 1897, at the age of 27 to
Gerritje Elisabeth Koster (aged 23 years), born in Harlingen on December 5, 1873, daughter of Jan Koster (painter's man) and Elisabeth van der Wijk, died in Harlingen on January 31, 1936, aged 62 years.

• 1 : Elisabeth Tigchelaar, born in Harlingen on May 1, 1898, died there on January 19, 1902, aged 3 years.
  

• 2 : Gerrit Tigchelaar, born in Harlingen on September 23, 1899, bargeman, docker and fuel dealer, died in Harlingen on October 1, 1954, buried there in October 1954, aged 55 years.
  Gerrit was married in Harlingen on December 29, 1924, at the age of 25 to Sietske Sjoerdsma (aged 21 years), born in Leeuwarden on November 29, 1903, daughter of Jan Willem Sjoerdsma and Barnadina Bons, died in Harlingen on August 29, 1979, buried there, aged 75 years.
  

• 3 : Jan Tigchelaar, born in Harlingen on July 10, 1901, transport worker, bargeman and factory worker, died unmarried in Harlingen on March 2, 1990, aged 88 years.
  

• 4 : Elisabeth Tigchelaar, born in Harlingen on July 13, 1903, died in Zaanstad on May 25, 1984, aged 80 years.
  Elisabeth was married in Assendelft on December 10, 1927, at the age of 24 to Simon Zwart (aged 36 years), born in Wormerveer on September 3, 1891, son of Simon Zwart and Maartje Jongejans, bricklayer and bouwbedrijf, died in Zaanstad on August 20, 1974, aged 82 years.
  Simon was married before in Haarlemmerliede on May 23, 1917, at the age of 25 to Lijsberta Geertruida Visser (aged 23 years), born in Haarlemmerliede on November 20, 1893, died in Zaandam on December 25, 1924, aged 31 years.
  

• 5 : Jetske Tigchelaar, born in Harlingen on May 16, 1905, maid servant, died in Sneek on December 5, 1982, buried in Leeuwarden on December 9, 1982, aged 77 years.
  Jetske was married in Harlingen on July 9, 1936, at the age of 31 to Sjoerd van der Veen (aged 36 years), born in Leeuwarden on October 20, 1899, son of Minne van der Veen (butcher) and Elisabeth van Dijck, undertaker's man and baker's man, died in Leeuwarden on December 15, 1964, aged 65 years.