Mary Catherine Kribs was born around 1849 in Guelph, Canada, to Paul and Sarah Kribs. Her father was a carpenter who owned $600 of real estate and $700 of personal property by 1860. The family immigrated to America around 1851 and settled in Elgin, Illinois. They moved to Trempealeau, Wisconsin, in the 1860s, and she married Charles Cramer Kribs on January 1, 1867.
They had at least seven children: Ella, born around 1868; Herbert, born around 1870; Edwin, born around 1873; Lottie, born around 1877; Charles, born on September 13, 1882; Abbie, born around 1886; and Stella, born around 1893. They lived in Trempealeau, and her husband worked as a tinsmith. By 1870, they owned $250 of personal property. They moved to Deer Creek, Minnesota, in the late 1800s, and by 1910, they were living in Wadena, Minnesota. They moved to Medford, Oregon, in the 1910s. Her husband died on April 13, 1916. She applied for a federal pension the following month and eventually received one. She died on a passenger train near Tracy, California, on May 22, 1919.