Simplify the following text for a Grade 11 native English-speaking person.
Original: Raffaello Sanzio da Urbino ( April 6 or March 28 , 1483 â `` April 6 , 1520 ) , better known simply as Raphael , was an Italian painter and architect of the High Renaissance , celebrated for the perfection and grace of his paintings and drawings .
Simplified: Raffaello Sanzio , usually known as Raphael ( April 6 , 1483 - April 6 , 1520 ) was a Renaissance painter and architect .