Caroline Seiler Ahrens was born June 3, 1861 in Waterloo County, the daughter of George Seiler and Elisabeth Schmidt. She married Henry Jacob Ahrens November 6, 1884 and the couple had five children: Walter Henry Ahrens, George Seiler Ahrens, Mabel Laura Ahrens, Carl Hermann "Charles" Ahrens, and Edith Louisa Ahrens. Ahrens attended the Church of the Good Shepherd and served as treasurer of the Woman's Auxiliary for 27 years. She was a member of Eastern Star, and sat on the board of the YWCA for several years and served as the treasurer of the board for 25 years. Ahrens died February 3, 1944 and was buried in Woodland Cemetery, Kitchener.