13th Century
St. Thomas Aquinas
Scholastic & Reform
St. Thomas Aquinas (1225 – 1274), Dominican friar and Doctor of the Church. Wikipedia
"Some men accordingly, not paying heed to these things, have contended that Christ's body and blood are not in this sacrament except as in a sign, a thing to be rejected as heretical, since it is contrary to Christ's words. "
Summa Theologica
View Source