- Pontefract Castle 15th Century
- 1408 - Having spent three weeks over Easter at Pontefract, Henry IV left the castle on 30th April 1408 arriving at Windsor by 21st May and the Tower of London 29th-31st May. Henry had headed for Yorkshire to supervise the arrests and executions of fugitives from the Battle of Bramham Moor, south of Wetherby, in February in which Henry Percy, 1st Earl of Northumberland, was killed and his invading army from Scotland routed. Percy’s ‘treacherous’ body was hanged, drawn and quartered, his head placed on London Bridge and other parts of his anatomy displayed in various locations.
- 1474 - On 30th April 1474, in letters dated that day at Pontefract, Richard, Duke of Gloucester, ordered £29 12s (£20,300 in today's money) worth of seafish from Thomas and Robert Burdon for his household and £54 (£37,000 in today's money) of sheep and cattle from Matthew Metcalfe.
- Pontefract Castle 17th Century
- 1645 - On 30th April 1645, the Parliamentary besiegers of Pontefract Castle relieved the guard at Baghill with at least 150 men and through the day a heavy fire was kept up on both sides. The besieged Royalists had one horse killed in the Barbican and the enemy had several men killed and wounded by the musketry from the Round Tower. During the night, the besiegers burnt two houses; one at Monkhill and a smaller one by the castle walls.
- 1646 - On 30th April 1646, it was resolved by the House of Commons that Royalist Sandal Castle should be made untenable as a military garrison having being besieged three times in 1645 by Parliamentary forces.