Law of Population was a treatise written  as a response to works on population growth by an English cleric and what?
Thomas Robert Malthus Thomas Robert Malthus ( ; 13 February 1766 – 29 December 1834) was an English cleric and scholar, influential in the fields of political economy and demography. Malthus himself used only his middle name, Robert.
Zachary Taylor (clergyman) Zachary Taylor (1653–1705) was an English clergyman, known for his controversial writings. One of his opponents dubbed him the "Lancashire Levite".