History Mystery: Name This Man

He lived 1340-1399

Kenilworth Castle was his home.

And Shakespeare immortalized him with these words:

This royal throne of kings, this scepter'd isle,

This earth of majesty, this seat of Mars,

This other Eden, demi-paradise,

This fortress built by Nature for herself

Against infection and the hand of war,

This happy breed of men, this little world,

This precious stone set in the silver sea,

Which serves it in the office of a wall,

Or as a moat defensive to a house,

Against the envy of less happier lands,

This blessed plot, this earth, this realm, this England

Who is he?

(Monday Answer: John of Gaunt, House of Lancaster, uncle to Richard II, ancestor of Henry VIII)