I think your timing's a bit out there Teribus. Constantinople fell in 1453, by which time the European Renaissance had been under way at least half a century- indeed Brunelleschi was already dead. The initial impetus is more usually credited to the rediscovery of ancient works preserved (usually in Arabic) in Muslim Spain. The looting of Byzantium by the Venetians during the Fourth Crusade probably brought a lot of manuscripts to Italy, but if so they had little immediate effect- unless they were part of the inspiration of the little "renaissance" of the early 13th century, exemplified by Roger Bacon and the Spiritual Franciscans, and suppressed by the Church from mid- century onwards.