Romeo Montague (Italian: Romeo Montecchi) is one of the title characters in William Shakespeare's tragedy Romeo and Juliet. He serves as the play's male protagonist. Romeo, the son of Montague and his wife, secretly loves and marries Juliet, a member of the rival House of Capulet. Forced into exile by his slaying of Juliet's cousin, Tybalt, in a duel, Romeo commits suicide upon hearing falsely of Juliet's death.
The character's origins can be traced as far back as Pyramus, who appears in Ovid's Metamorphoses, but the first modern incarnation of Romeo is Mariotto in the 33rd of Masuccio Salernitano's Il Novellino (1476). This storey was adapted by Luigi da Porto as Giulietta e Romeo (1530), and Shakespeare's main source was an English verse translation of this text by Arthur Brooke. Although both Salernitano and da Porto claimed that their storeys had historical basis, there's little evidence that this is the case.
Romeo, an only child like Juliet, is one of the most important characters of the play, and has a consistent presence throughout it. His role as an idealistic lover has led the word "Romeo" to become a synonym for a passionate male lover in various languages. Although often treated as such, it isn't clear that "Montague" is a surname in the modern sense.
The earliest tale bearing a resemblance to Shakespeare's Romeo and Juliet is Xenophon of Ephesus' Ephesiaca, whose hero is a Habrocomes. The character of Romeo is additionally similar to that of Pyramus in Ovid's Metamorphoses, a youth who's unable to meet the object of his affection due to an ancient family quarrel, and later kills himself due to mistakenly believing her to have been dead. Although it is unlikely that Shakespeare directly borrowed from Ovid while writing Romeo and Juliet, the storey was likely an influence on the Italian writers who the playwright was greatly indebted to. The two sources which Shakespeare most likely consulted are Brookes' translation of de Porta and W. Painter's The goodly historye of the true, and constant Love between Romeo and Juliet.