Complex sentence: Giovanni di Bicci de Medici, 1360-1429, founder of the success of the famous and powerful Medici dynasty of Florence; father of Cosimo de Medici, and great-grandfather of Lorenzo de Medici.
Split into simpler sentences: Giovanni di Bicci de Medici, 1360-1429. Founder of the success of the famous and powerful Medici dynasty of Florence; father of Cosimo de Medici, and great-grandfather of Lorenzo de Medici.