The star of Magnificent Montague as Edwin Montague himself was Monty Woolley. Woolley was best known as insider east coast actor and even taught English at Yale.
Woolley privately despised radio, so his characterization of Edwin was not a far stretch from his real life.
Prim-voiced Broadway actress Anne Seymour played Edwin's wife. She was best known for her performances on such radio programs as "Grand Hotel" and "A Woman of America."
The versatile and amazing Pert Kelton played the maid, Agnes.