Sir John Falstaff is a fictional character who appears in three plays by William Shakespeare and is eulogised in a fourth. His significance as a fully developed character is primarily formed in the plays Henry IV, Part 1 and Part 2, where he is a companion to Prince Hal, the future King Henry V of England. Falstaff is also featured as the buffoonish suitor of two married women in The Merry Wives of Windsor. Though primarily a comic figure, Falstaff embodies a depth common to Shakespeare's major characters. A fat, vain, and boastful knight, he spends most of his time drinking at the Boar's Head Inn with petty criminals, living on stolen or borrowed money. Falstaff leads the apparently wayward Prince Hal into trouble, and is ultimately repudiated after Hal becomes king.

Henry V is a history play by William Shakespeare, believed to have been written near 1599. It tells the story of King Henry V of England, focusing on events immediately before and after the Battle of Agincourt (1415) during the Hundred Years' War. In the First Quarto text, it was titled The Cronicle History of Henry the fift, and The Life of Henry the Fifth in the First Folio text.