Catherine Irsch (maiden name unknown) was born around 1816 in Germany. She married Francis Irsch, and they had at least two children: Francis, born on December 4, 1840; and John, born around 1845. They immigrated to America around 1850 and settled in New York City. Her husband died sometime before 1864, and she lived with her son Francis until at least 1900. She died in New York City on May 2, 1902.