Tjalling getrouwd Agatha Ypkes KETELAAR on 11 mei 1802inBlauwhuis(Friesland). Agatha (dochter van Ypke Hieltjes KETELAAR en Reinouw Gerbens) was born on 22 feb 1783 in Workum(Friesland); was gedoopt on 22 feb 1783 in Workum(Friesland); stierf on 22 jun 1840inWorkum(Friesland). [Gezinsblad]