Alternatively, this spelling can represent the distinct but related Arabic name حسّان (having a doubled middle consonant and a final long vowel) meaning "beautifier, improver". Hassan ibn Thabit was a 7th-century poet who was a companion of the Prophet Muhammad.
This name was initially more common among Eastern Christians in the Byzantine Empire, but it flourished in Western Europe after the First Crusade. In England it became extremely popular, typically being the most common male name from the 13th to the 20th century (but sometimes outpaced by William). During the later Middle Ages it was given to approximately a fifth of all English boys. In the United States it was the most common name for boys until 1923.
The name (in various spellings) has been borne by 21 popes and eight Byzantine emperors, as well as rulers of England, France, Sweden, Denmark, Poland, Portugal, Bulgaria, Russia and Hungary. It was also borne by the poet John Milton (1608-1674), philosopher John Locke (1632-1704), American founding father and president John Adams (1735-1826), and poet John Keats (1795-1821). Famous bearers of the 20th century include author John Steinbeck (1902-1968), assassinated American president John F. Kennedy (1917-1963), and musician John Lennon (1940-1980).
The forms Ian (Scottish), Sean (Irish) and Evan (Welsh) have also been frequently used in the English-speaking world, as has the medieval diminutive Jack.
In the Middle Ages, Joseph was a common Jewish name, being less frequent among Christians. In the late Middle Ages Saint Joseph became more highly revered, and the name became popular in Spain and Italy. In England it became common after the Protestant Reformation. In the United States it has stayed within the top 25 names for boys since 1880, making it one of the most enduringly popular names of this era.
This name was borne by rulers of the Holy Roman Empire and Portugal. Other notable bearers include Austrian composer Joseph Haydn (1732-1809), the founder of Mormonism Joseph Smith (1805-1844), Polish-British author Joseph Conrad (1857-1924) and Soviet dictator Joseph Stalin (1878-1953).
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.