In 1934 he became the branch manager of the Corn Exchange Bank in New York City. He was brother-in-law to Tammany Hall leader and congressman James H. Torrens, personally active in Tammany politics, and a first cousin to the politician, attorney and actor Dudley Field Malone. Renehan was noted for his many gifts to Saint Patrick"s College, Maynooth (County Kildare, Ireland) where his great-uncle, the Review
Doctor Laurence F. Renehan, 1797–1857, had been President in the 1850s.
He was also for many years an officer in the Friendly Sons of Saint Patrick and the Ancient Order of Hibernians. As a young man, Renehan served as secretary to Irish American attorney and politician William Bourke Cockran.
He died in 1953.