William McChesney Martin

William McChesney Martin Jr. was an American business executive who served as the 9th chairman of the Federal Reserve from 1951 to 1970, making him the longest holder of that position. He was nominated to the post by President Harry S. Truman and reappointed by four of his successors. Martin, who once considered becoming a Presbyterian minister, was described by a Washington journalist as "the happy Puritan".