There have been 13 popes named Leo so you need to be specific.
Pope St. Leo had many achievements but is, perhaps, remember for his meeting with Attila the Hun which stopped the invasion of Italy.For details on many of his other accomplishments, click on this link.
Leo and I
Leo Mezie is Leo Mezie
Leo little is played by Leo howard
Leo is a constellation - there is not a constellation inside Leo.
Yes his real name is Leo Hoawrd. He played as Leo Little on Leo Little's big show, but his real name is Leo Howard.
she made no accomplishments
Leo Ricciardi goes by Leo.
Leo Curbelo goes by Leo.
because they liked the name leo
Do you mean Leo the star sign? If so, it represents a lion and Leo is the Latin for lion.