I am looking for information on the families of Mary J "Mamie" Collins (1883-1935), daughter of Cornelius and Catherine Collins of Lincoln Co., South Dakota, who married Ludwig "Louis" Gruendel (1882-1977), son of Herman and Alma (Hoffman) Gruendel of Lincoln Co., South Dakota. Mary and Louis moved to Orange Co., California btwn 1920-1935. They have one known daughter, Katherine Loretta Gruendel (1917-1994) who married unknown Norton.