- TLN 2380historical topical
“fever that hath troubled me so long”
John's fatal illness is the play's first hint that he is dying, not merely battle-worn. Historically, John contracted a severe illness — probably dysentery — in October 1216, compounded by the disaster at the Wash, where his baggage train, treasure, and regalia were swallowed by tidal flats. He died at Newark on 19 October 1216. Shakespeare turns this historical death-by-disease into a dramatic arc that runs through the play's final scenes.
historical Holinshed's Chronicles - TLN 2385historical topical
“toward Swinstead, to the abbey there”
Swinstead (historically Swineshead) is an abbey in Lincolnshire where John retreated while gravely ill and where he died — or, in the older chronicle and stage tradition, was fatally poisoned by a monk. Shakespeare's source play, The Troublesome Raigne of King John (1591), staged a monk called Thomas of Swinstead who poisoned John's cup and then drank from it himself to forestall suspicion, dying alongside the king. Shakespeare omits the monk but keeps Swinstead as John's destination and death-place.
historical The Troublesome Raigne of King John - TLN 2386historical topical
“great supply / That was expected by the Dauphin here / Are wreck'd three nights ago on Goodwin Sands”
Goodwin Sands is a notorious stretch of shifting sandbanks off the Kent coast, long a graveyard for ships. The wrecking of Louis the Dauphin's reinforcement fleet there is the turning point that ends the French invasion of England: with no fresh troops or supplies arriving, the French forces fight 'coldly' and begin to withdraw. Without this news the battle might have gone the other way for Louis.
historical Holinshed's Chronicles “to my litter straight”
'Litter' here means a portable couch or stretcher, slung between poles and carried by horses or men, used to transport the sick, wounded, or high-ranking when they could no longer ride. John ordering himself to a litter signals that he is too weak to ride a horse — a visible, humiliating sign of a king's collapse in the middle of a military campaign.