Hij is getrouwd met Grietje Berends Braak.
Zij zijn getrouwd op 6 mei 1827 te Weener Ems, Ostfriesland, Hanover, Germany , hij was toen 22 jaar oud.
Kind(eren):
Sons Michel Jans Kuper and Berend Jans Kuper immigrated to America and settled in Lincoln County, SD and nearby Turner County respectively. Berend arrived about 1884 with his second wife Antje Wessels Kuper and three children. Michel's obituary says he arrived in 1887 with wife Wesselena Wessels Kuper and five children. Both families may have stayed briefly in Iowa with friends and other family members from Ostfriesland.
At least two sons (Folkert Harms Kuper and Cornelius Harms Kuper) of their cousin Harm Harms Kuper arrived in Lincoln County around the same time.
Jans (John) Jans Kuiper (Kuper) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1827 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Grietje Berends Braak |
De getoonde gegevens hebben geen bronnen.