Klaas Tichelaar, born in Harlingen on July 19, 1896, son of Klaas Tichelaar (workman and casual labourer) and Adriaantje Geelof, docker, crane driver and watchman, died in Amsterdam on November 10, 1972, aged 76 years.

Klaas was married in Danzig on February 28, 1920, at the age of 23 to
Berta Augusta Grabinski (aged 21 years), born in Bürgerwiesen on August 1, 1898, daughter of Valentin Grabinski and Justine Peters, died in Amsterdam on March 26, 1976, aged 77 years.