The Renaissance was a time of kings and queens. There were no elected officials to any office and that won't happen for another 400 years. The Medici were very powerful and were like kings in Florence. They were bankers, sponsored art and architecture, and had a pope who was a family member.
Lorenzo De Medici
The Medici family. Namely Lorenzo De Medici or Lorenzo the Magnificent.
The Medici family, Cosimo, his son Piero and Piero's son Lorenzo.
The Medici banking family was the leading patron of Renaissance Florence.
Since the family controlled the entire Florence, their family fortune was close to something like 650 billion dollars. After Lorenzo died, the fortune was lost forever by other rulers and kings. Since the family controlled the entire Florence, their family fortune was close to something like 650 billion dollars. After Lorenzo died, the fortune was lost forever by other rulers and kings.
He was born into a wealthy banking family, and successfully led the Republic of Florence against attack, and helped the city prosper.
Lorenzo De Medici was important in the Italian Renaissance because he and he's family was the most 'powerful patrons' of the Renaissance.
Vincent Gardenia played Frank Lorenzo on All in the Family.
Medici is the family of Florence
If your question is about what ruling family Florence (Italy) is famous for, then this would be the Medici family.
Michelangelo (1475-1564) was aided in his youth by the patronage of Lorenzo de'Medici (1449-1492) during the Italian Renaissance. From 1490-1492, Michelangelo attended the Humanist academy established by Medici, who also commissioned the small marble relief "Battle of the Centaurs".
Michelangelo Buonaroti lived in his parents' house in Florence. After the death of his mother when he was seven years old, Michelangelo lived with a stonecutter and his wife and family in the town of Settignano. When very young he was allowed to take part in sculptor training, and there he was noticed by Lorenzo "il Magnifico" dei Medici. Lorenzo then let young Michelangelo come and go in Lorenzo's home much as he pleased. He did not move into that house, though.