1. Harmannus (Roelfs) was born in Sappemeer.
Harmannus married 1 Trientje (Halbes) on 24 Sep 1752 in Sappemeer. Trientje was born in Sappemeer.
They had the following children:
+ 2 M i Roelof (Hermannus) Niehuis. + 3 M ii Halbe (Hermannus) Nijhuis was born about 1759. He died on 17 Nov 1843. + 4 F iii Tecla (Hermannus).