Ehe Catherina Rüstmann, daughter of Johann Peters Rüstmann and Amke Harms Hagen , was born on 5 April, 1871, in West Dunen, Dunum, Ostfriesland, died on 21 May, 1943, in Wenona Haven, Wenona, Illinois, at age 72, and was buried on 24 May, 1943, in Minonk Township Cemetery, Minonk, Illinois.

Ehe Catherina married August Siemers on 11 March, 1888, in German Evangelical St. Pauls Church, Minonk, Illinois. August was born on 29 August, 1862, in Tonica, Illinois, died on 7 February, 1922, in Streator Hospital, Streator, Illinois, at age 59, and was buried on 10 February, 1922, in Minonk Township Cemetery, Minonk, Illinois. They had six children: John Heinrich, August Alfred, Dorothea Annette Maria, Adalia Esther, Edwin Lester , and Hilda Edith .

John Heinrich Siemers was born on 29 November, 1888, in Groveland Township.

August Alfred Siemers was born on 22 July, 1891, in Groveland Township.

Dorothea Annette Maria Siemers was born on 5 December, 1896, in Groveland Township.

Adalia Esther Siemers was born on 5 December, 1900, in Groveland Township.

Edwin Lester Siemers was born on 2 October, 1904, in Groveland Township.

Hilda Edith Siemers was born on 9 November, 1910, in Groveland Township and died on 5 May, 1911, in Groveland Township.