When Aaltje Jansen Groothuijs was born on 15 February 1786, in Nunspeet, Ermelo, Gelderland, Netherlands, her father, Marten Groothuijzen, was 29 and her mother, Aaltje Everts, was 25. She married Jan Stevens Visser on 7 February 1812, in Epe, Gelderland, Netherlands. They were the parents of at least 2 sons and 2 daughters.
Dutch, Flemish, Norwegian, Danish, and North German: patronymic from the personal name Jan, a shortened vernacular form of Johannes (see John ). In North America, this surname is also an altered form of the variant Janssen . Compare Janson 1 and Johnson .