Ehe Catharina Rustmann, daughter of Foke Janssen Rustmann and Lucea Maria Antons , was born on 31 May, 1822, in Moorweg, Esens, Ostfriesland.

Ehe Catherina married Oltmann Behrends Post on 16 May, 1856, in Nord Dunum, Dunum, Ostfriesland. Oltmann was born on 30 November, 1830, in Negenbargen, Burhafe, Ostfriesland, and died on 25 January, 1872, in Negenbargen, Burhafe, Ostfriesland, at age 41. They had three children: Lucea, (No Given Name) , and Tade Janssen .

Lucea Post was born in 1857, in Jackstede, Burhafe, Ostfriesland.

Post was born on 24 October, 1860, in Negenbargen, Burhafe, Ostfriesland, and died on 24 October, 1860, in Negenbargen, Burhafe, Ostfriesland.

Tade Janssen Post was born on 24 September, 1861, in Negenbargen, Burhafe, Ostfriesland.