Complex sentence: Richard Swineshead (a.k.a. Suisset, Suiseth, etc.) (fl. c.1340--1354), logician and natural philosopher, was perhaps the greatest of the Oxford Calculators of Merton College, where he was a fellow certainly by 1344 and possibly by 1340.
Split into simpler sentences: Richard Swineshead (a.k.a. Suisset, Suiseth, etc.) (fl. c.1340--1354) an English mathematician, logician, and natural philosopher. He was perhaps the greatest of the Oxford Calculators of Merton College, where he was a fellow certainly by 1344 and possibly by 1340.