Roscelin of Compiègne, better known by his Latinized name Roscellinus Compendiensis or Rucelinus, was a French philosopher and theologian, often regarded as the founder of nominalism. 1050 – 1121; died at about 71. Alive at the same time as Omar Khayyám, William the Conqueror, Anselm of Canterbury, Su Shi, and Peter Abelard. Wiki link