Leo Yungfleisch was born on September 25, 1936 in Pittsburgh, Pennsylvania. He grew up in Pittsburgh and served in the US Navy. On October 17, 1959 he married Shirley Nadine Swingle in Columbus, Ohio where they lived in the Westgate area and were active in the St. Mary Magdalene parish. Leo Yungfleisch passed away on September 16, 2017 in Phoenix, Arizona and was buried at the National Memorial Cemetery of Arizona.