Susanna de Groot, born in Harlingen on January 22, 1905, daughter of Tjerk de Groot and Anna Kwast, maid servant, died in Amsterdam on November 17, 1997, aged 92 years.

Susanna was married in Amsterdam on November 6, 1929, at the age of 24 to
IJsbrand Hartkamp (aged 24 years), born in Sneek on February 28, 1905, died in Amsterdam on January 16, 1958, aged 52 years.