David L. Lawrence

David Leo Lawrence was an American politician who served as the 37th governor of Pennsylvania from 1959 to 1963. The first Catholic elected as Pennsylvania's governor, Lawrence is the only mayor of Pittsburgh to have also been elected as Governor of Pennsylvania. He served four terms as mayor, from 1946 through 1959. A panel of 69 scholars in 1993 ranked him third among the ten best mayors in American history.