Please answer a question about the following article about New Haven, Connecticut:

New Haven was the subject of Who Governs? Democracy and Power in An American City, a very influential book in political science by preeminent Yale professor Robert A. Dahl, which includes an extensive history of the city and thorough description of its politics in the 1950s. New Haven's theocratic history is also mentioned several times by Alexis de Tocqueville in his classic volume on 19th-century American political life, Democracy in America. New Haven was the residence of conservative thinker William F. Buckley, Jr., in 1951, when he wrote his influential God and Man at Yale. William Lee Miller's The Fifteenth Ward and the Great Society (1966) similarly explores the relationship between local politics in New Haven and national political movements, focusing on Lyndon Johnson's Great Society and urban renewal.

To which prominent conservative, that authored God and Man at Yale, did New Haven provide residence in 1951?
William F. Buckley, Jr.