In the Middle Ages this name was common in England due to the popularity of medieval tales about the Trojan War. It subsequently became rare, but was revived in the 20th century.
As an English name, Laura has been used since the 13th century. Famous bearers include Laura Secord (1775-1868), a Canadian heroine during the War of 1812, and Laura Ingalls Wilder (1867-1957), an American author who wrote the Little House on the Prairie series of novels.
It has been used as a Christian given name in the English-speaking world since the Protestant Reformation. A famous bearer was Nathan Hale (1755-1776), an American spy executed by the British during the American Revolution.
Due to the renown of the saint, this name has been widely used in the Christian world. It has been common in England since the 12th century, though it became a bit less popular after the Protestant Reformation. The name has been borne by five popes and two tsars of Russia.