When Arentdina Arends was born on 5 September 1851, in Amsterdam, North Holland, Netherlands, her father, Gerd Davids Arends, was 36 and her mother, Arentdina Meijer, was 39. She married Johan Bernhard Reijndorp on 6 August 1874, in Amsterdam, North Holland, Netherlands. They were the parents of at least 7 sons and 7 daughters. She died on 7 July 1923, in her hometown, at the age of 71, and was buried in Amsterdam, North Holland, Netherlands.
Dutch and German: patronymic from the personal name Arend , inflected with genitive -s.