In Greek mythology, Kairos was the personification of opportunity, luck and favorable moments.
This name died out after the Middle Ages, but was revived in the 19th century. In America and other countries it became fairly popular in the second half of the 20th century. A famous bearer of the surname is former basketball star Michael Jordan (1963-).
Jonah's story was popular in the Middle Ages, and the Hellenized form Jonas was occasionally used in England. The form Jonah did not become common until after the Protestant Reformation.
A famous bearer was Jesse James (1847-1882), an American outlaw who held up banks and stagecoaches. He was eventually shot by a fellow gang member for a reward. Another famous bearer was the American athlete Jesse Owens (1913-1980), whose real name was James Cleveland (or J. C.) Owens.
Hector has occasionally been used as a given name since the Middle Ages, probably because of the noble character of the classical hero. It has been historically common in Scotland, where it was used as an Anglicized form of Eachann.