Thomas Lawrence McNamara, Sr. (November 18, 1882 – July 21, 1939)[1] was an American professional golfer.

[3] Due to the extremely hot temperatures, McNamara suffered a heatstroke on the 14th hole.

McNamara was considered one of American's best homegrown professionals during the early twentieth century.

[4][circular reference] Thus came the PGA Championship, first played in 1916 at Siwanoy Country Club.

[2] McNamara died, from coronary thrombosis,[2] at his home in Mount Vernon, New York on July 21, 1939.