The name Leonardo is an Italian, Spanish and Portuguese form of Leonard.
Famous bearers
Bearers include Leonardo of Pisa (1170s or 1180s - 1250), also known as Leonardo Pisano, Leonardo Bonacci, Leonardo Fibonacci, or simply Fibonacci, an Italian mathematician;
Leonardo da Vinci (1452 - 1519), an Italian scientist, engineer, inventor, mathematician, painter, sculptor, architect, and writer;
Leonardo DiCaprio (born 1974), an American actor.