Dr. Kerrigan was born in the city of New York in March, 1920. After graduating from Harvard University with a B.S. degree in 1943 he entered the Medical School there, graduating in 1946. He completed a pathology internship at Boston Children's Hospital and then spent two years in the U. S. Navy. Dr. Kerrigan returned to Massachusetts for a residency in Pediatrics followed by a fellowship in Endocrinology and Metabolism at Massachusetts General Hospital. An appointment on the Harvard Medical School faculty was received. He moved to the Marquette University School of Medicine in 1954 as Assistant Professor of Pediatrics. On March 1, 1965, Dr. Kerrigan was appointed Dean of the Medial School. He served in that capacity until 1977. During his appointment as Dean he faced many crises: the school change its name twice, it weathered financial difficulties, he grew the full time faculty and much more. Source: "Engbring, Norman H. An Anchor for the Future: a history of the Medical College of Wisconsin, 1893-1990. Medical College of Wisconsin, 1991. pps. 199, 288"