Anna Nieuwkerk was a daughter of Mozes Barend Nieuwkerk and Duifje Koopman Sturkop. She married 9 Augustus 1876 in Amsterdam Levie Duijts (Duijtz), a son of Abraham David Duijts and Hanna Levie Pool.
On 15 January 1914 she was registered in the Municipality of Apeldoorn at the address Loolaan 59, where the health resort Boschrust was located. After her stay there, she returned to Amsterdam however…