Kilvington Richard, surname also spelled Kilmington, Chillington (1302/05–61), English philosopher, theologian, and ecclesiastic. He was a scholar associated with the household of Richard de Bury and an early member of the Oxford Calculators, important in the early development of physics. Kilvington’s Sophismata (early 1320s) is the only work of his studied extensively to date. It is an investigation of puzzles regarding change, velocity and acceleration, motive power, beginning and ceasing, the continuum, infinity, knowing and doubting, and the liar and related paradoxes. His approach is peculiar insofar as all these are treated in a purely logical or conceptual way, in contrast to the mathematical ‘calculations’ used by Bradwardine, Heytesbury, and other later Oxford Calculators to handle problems in physics. Kilvington also wrote a commentary on Peter Lombard’s Sentences and questions on Aristotle’s On Generation and Corruption, Physics, and Nicomachean Ethics. See also OXFORD CALCULATOR. P.V.S.