Conversation so far:
What is notable about George M. Cohan's personal life?
From 1899 to 1907, George M. Cohan was married to Ethel Levey, a musical comedy actress and dancer.
Did George M Cohan and Ethel Levey a musical comdey actress and dancer have any children?
Ethel Levey and George M. Cohan had a daughter, actress Georgette Cohan Souther Rowse
How was George M Cohan and Ethel Levey's marriage?
Ethel Levey divorced George M. Cohan on grounds of adultery
What happened after Ethel Levey divorced George M. Cohan on grounds of adultery?
George M. Cohan married Agnes Mary Nolan
Did George M. Cohan and Agnes Mary Nolan have any children?
George M. Cohan and Agnes Mary Nolan had two daughters and a son
What happened with George M Cohan and Agnes Mary Nolan marriage?
George M. Cohan and Agnes Mary Nolan remained married until his death

Question: When did he die?
Self-contained rewrite: When did George M. Cohan die?