Willem Wassenaar, born in Harlingen circa 1840, son of Luitje Obes Wassenaar and Helena Johannes Outhuis, stoneware baker.

Willem was married in Harlingen on May 15, 1862, at the age of approximately 22 to
Hiltje Germens Tichelaar (aged 25 years), born in Harlingen on April 27, 1837, daughter of Gerben Hayes Tichelaar (workman) and Pietje Yeps van der Werf, died in Harlingen on October 30, 1889, aged 52 years.

• 1 : Luitzen Wassenaar, born in Harlingen on April 4, 1863.
  

• 2 : Germen Wassenaar, born in Harlingen on April 16, 1865.
  

• 3 : Obbe Wassenaar, born in Harlingen on February 20, 1868.
  

• 4 : Helena Wassenaar, born in Harlingen on March 23, 1870.
  

• 5 : Pietje Wassenaar, born in Harlingen on July 26, 1872.
  

• 6 : Pietje Wassenaar, born in Harlingen on November 6, 1873.
  

• 7 : Obbe Wassenaar, born in Harlingen on July 27, 1876.
  

• 8 : Willem Wassenaar, born in Harlingen on August 6, 1878.