Simplify the following text for a Grade 10 native English-speaking person.
Original: Filippo Brunelleschi ( 1377 â `` April 15 , 1446 ) was one of the foremost architects and engineers of the Italian Renaissance .
Simplified: Filippo Brunelleschi ( 1377 â `` April 15 , 1446 ) was one of the most important architects of the Italian Renaissance .