Sir John Oldcastle of Martyrs". Oldcastle was also a minor character in the early Elizabethan history play the "Famous Victories of Henry V" (c. 1586?), which is generally thought to have been one of Shakespeare's sources for his plays on Henry IV and Henry V. The genesis of "Sir John Oldcastle" is crucially linked to the fact that when Shakespeare's "Henry IV" plays premiered on stage in 1597–98, the character Sir John Falstaff was called Sir John Oldcastle. This is indicated by abundant external and internal evidence. The change of names, from "Oldcastle" to "Falstaff," is mentioned in seventeenth-century works by Richard James
Religious views of William Shakespeare Shakespeare's portrayal; the story of Oldcastle was a popular one and telling the tale from the "Papist" perspective (while acknowledging that perhaps this was a perspective with which Shakespeare already had some affinity) was an effective and familiar way to bring it to his audience. A direct explanation, however, comes from the facts of the story in the contemporary accounts of the period; Prince Henry had left his dear friend Oldcastle to his fate after he had failed to persuade the stubborn old knight to recant when he was imprisoned for lollardry. Archdeacon Richard Davies, a 17th-century Anglican cleric, wrote