This name appears in the New Testament belonging to a companion of Saint Paul. He became the first bishop of Crete and was the recipient of one of Paul's epistles. This was also the praenomen of all three Roman emperors of the 1st-century Flavian dynasty, and it is the name by which the second of them is commonly known to history. Shakespeare later used it for the main character in his tragedy Titus Andronicus (1593). As an English name, Titus has been occasionally used since the Protestant Reformation.
This name has been used occasionally in England since the 12th century. It was not common in the English-speaking world until the end of the 20th century.
Because Elijah was a popular figure in medieval tales, and because his name was borne by a few early saints (who are usually known by the Latin form Elias), the name came into general use during the Middle Ages. In medieval England it was usually spelled Elis. It died out there by the 16th century, but it was revived by the Puritans in the form Elijah after the Protestant Reformation. The name became popular during the 1990s and 2000s, especially in America where it broke into the top ten in 2016.