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
Oldcastle, County Meath of the Charles II courtier, Sir Anthomy Jackson II, of Killingswold Grove, East Yorkshire, England) of Eccleston, Lancashire, England who died in nearby County Cavan after 1666. Isaac was an early Quaker in Ireland, as was his father. He moved to Ballitore, County Kildare, where he married and raised a large family, mostly all of whom emigrated with their parents to Chester County, Pennsylvania, USA in 1725. Oldcastle suffered quite badly during the Great Famine and subsequent emigration. Owing to the continuation of a Gaelic way of life in the north of the county, Oldcastle suffered far more than the