Catherine Cowen went to join the Missionary Sisters Servants of the Holy Ghost on September 5, 1947. This is the order of the sisters at St. Mary's Hospital Watertown, Wisconsin. July 6, 1948 she became a novice and took the name of Sister Dennis in honor of her brother Dennis who was killed in Italy in 1944. Catherine taught in Jackson, and Greenville, Mississippi from 1953-1955. Catherine was a sister for nearly 9 years from the fall of 1947 until the spring of 1956. Graduate of Mercy Hospital, Osh Kosh, Wisconsin 1959 - R.N. and resigned in 1963. Catherine received her B.S. at the University of Wisconsin in 1968 and worked at the Veteran's Administration in Milwaukee and Madison, Wisconsin.