Krystyna Jans Niemeijer is geboren circa 1716 in Ter Apel, gemeente Vlagtwedde; is gestorven circa 24 aug 1778 in Onstwedde; is begraven op 28 aug 1778 in Onstwedde.
Geertruida Jans is geboren circa 1722 in Onstwedde; is gestorven na 1755 in Sappemeer.