Wigglesworth graduated from Harvard in 1912, and from Harvard Law School in 1916. He also served as a graduate coach of the Harvard football team starting in 1912.[1] He was assistant private secretary to the Governor General of the Philippine Islands. He was admitted to the bar and commenced practice in Boston.
During World War I he served overseas as captain, Battery E, and as commanding officer, First Battalion, Three Hundred and Third Field Artillery, Seventy-sixth Division, 1917–1919. He served as legal adviser to the Assistant Secretary of the Treasury in charge of foreign loans and railway payments, and secretary of the World War Debt Commission 1922–1924. He was assistant to the Agent General for Reparation Payments, Berlin, Germany 1924–1927. He was general counsel and Paris representative for organizations created under the Dawes plan in 1927 and 1928.
^"Richard B. Wigglesworth Dead; Ambassador to Canada Was 69; Served Massachusetts for 16 Consecutive Terms In House -- Named Envoy in '58". The New York Times. October 23, 1960.
^"Ambassador to Canada Dies". The Greeley Daily Tribune. October 22, 1960.