Ulrich Zwingli (1484-1531) was an early Swiss reformer who developed the doctrine of memorial sacramentology (i.e. we simply remember Christ’s once-for-all sacrifice) over against the Roman Catholic teaching of transubstantiation (i.e. the heretical belief that during the ceremony the substance of the elements are transformed into the physical body of Christ, so that His body is again physically broken and blood poured out). ┬áThus, Zwinglian refers to the teachings of Zwingli.