What is the birthday of the man who succeeded Mo Cowan in 2013 for United States Senator from Massachusetts?
Mo Cowan: William Maurice "Mo" Cowan (born April 4, 1969) is an American politician and lawyer who served as a United States Senator from Massachusetts in 2013. Mo Cowan:  He was succeeded by fellow Democrat Ed Markey. Ed Markey: Edward John Markey (born July 11, 1946) is an American politician and member of the Democratic Party who is the junior United States Senator from Massachusetts, in office since 2013.
July 11, 1946