Tom graduated from Loyola Academy in 1949 and received his bachelor's degree from Georgetown University in 1953. His most recent profession was an investment broker at Markham Investments LLC, where he also served as president. Prior to Markham, Tom was also involved in the brokerage business in Chicago with the firms Jerome Hickey and Associates, and Burton J. Vincent, Chesley & Company. Survivors include his son, Thomas E. (Donnelly Devereaux) Caestecker, Jr. of Wilmette, IL; granddaughters, Ella O'Connell Caestecker and Mary Katherine Caestecker; and grandson, Charles Edmund Caestecker II.