Francis I of France was a king who ruled from 1515 to 1547. He is known for his efforts to strengthen the French monarchy and expand its territories. Francis was a patron of the arts and played a significant role in the Renaissance in France, supporting artists like Leonardo da Vinci. He was also involved in various military conflicts, including wars against Charles V, the Holy Roman Emperor. Francis I is remembered for his rivalry with Henry VIII of England and for establishing the French language as a key element of national identity.