In one painting by this artist, a Triton on a white horse blows a trumpet as two dolphins pull a man in a red robe. This artist also included  a monstrance in the center of a work in which scholars debate over Transubstantiation. This painter of The Triumph of Galatea and La Disputa depicted Mary holding a book and the infants John and Jesus holding a bird in his Madonna of the Goldfinch. The cent
In one painting by this artist, a Triton on a white horse blows a trumpet as two dolphins pull a man in a red robe. This artist also included  a monstrance in the center of a work in which scholars debate over Transubstantiation. This painter of The Triumph of Galatea and La Disputa depicted Mary holding a book and the infants John and Jesus holding a bird in his Madonna of the Goldfinch. The central figure in his most famous work points towards the heavens and stands on top of some stairs, apart from Diogenes, but next to Aristotle. For 10 points, name this Italian Renaissance painter of The School of Athens.  
In one painting by this artist, a Triton on a white horse blows a trumpet as two dolphins pull a man in a red robe.
Raphael [or Rafael or Raffaello Sanzio da Urbino]