As an English name, Chloe has been in use since the Protestant Reformation. It started getting more popular in the 1980s in the United Kingdom and then the United States. It was the most popular name for girls in England and Wales from 1997 to 2002. This is one of the few English-language names that is often written with a diaeresis, as Chloë.
As an English name, Hannah was not regularly used until after the Protestant Reformation, unlike the vernacular forms Anne and Ann and the Latin form Anna, which were used from the late Middle Ages. In the last half of the 20th century Hannah surged in popularity and neared the top of the name rankings for both the United States and the United Kingdom.
Although this name was used by Jews in the Middle Ages, it was not typical as an English Christian name until after the Protestant Reformation, being common among the Puritans.
The name was common in France during the Middle Ages, and was introduced from there to England, though it eventually became rare. Interest in it was revived by the character Melanie Wilkes from the novel Gone with the Wind (1936) and the subsequent movie adaptation (1939).
Famous bearers include Peyton Randolph (1721-1775), the first president of the Continental Congress, and American football quarterback Peyton Manning (1976-).
Very rare as an American given name before 1980, it increased in popularity in the 1980s and 90s. It got a boost in 2004 after the debut of the television series Lost, which featured a character by this name.