Howard Nemerov (1920-1991)
A Pulitzer Prize-winning American poet and professor at Washington University in St. Louis who wrote an introduction to the McGraw-Hill edition of Poetic Diction and contributed to Evolution of Consciousness: Studies in Polarity.

Donna Potts' Howard Nemerov and Objective Idealism (included in its entirety here) examines Barfield's influence on Nemerov and provides details of their friendship.