Aaltje Jacobs Bosman.

Aaltje was married to
Ysebrand Dirks Oosten, huisman, born in Spanga (gem Weststellingwerf) circa 1758, died there on December 30, 1828, aged approximately 70 years.

• 1 : Jacob IJssebrands Oosten, born circa 1811, died in Weststellingwerf on January 30, 1867, aged approximately 56 years.
  Jacob was married in Weststellingwerf on May 27, 1840, at the age of approximately 29 to Margjen Jans Schut.
  

• 2 : Jannigje IJsebrands Oosten, born in Spanga (gem Weststellingwerf) on December 11, 1813, died in Weststellingwerf on July 6, 1864, aged 50 years.
  Jannigje was married in Weststellingwerf on May 23, 1833, at the age of 19 to Tijmen Kornelis de Boer (aged 22 years), boer and boerenwerkdoende, born in Langelille on September 9, 1810, christened in Scherpenzeel on September 16, 1810, died in Weststellingwerf on February 3, 1900, aged 89 years, son of Kornelis Pieters de Boer (boer) and Klaasjen Jacobs Landman.