- Pontefract Castle 17th Century
- 1645 - Parliament's Colonel General Poyntz called a council of law on 20th June 1645 in the town. In the afternoon, there arrived several loaded wagons at the New Hall in which in one of these there was a cannon. A party of infantry played their cannon without doing any damage. On the following day, Parliamentary forces began to form a platform at Monkhill for the cannon. Efforts by the Royalist garrison in firing at them were unsuccessful for the works they had already raised protected the opposing forces. The following night, the cannon was brought from New Hall and placed against the church. The guard was relieved at the church and a deserter came into the castle and informed the besieged Royalists that the Parliamentary troops, unsuccessful against His Majesty, had since been routed.
- Sandal Castle 13th Century
- 1264 - On 20th June 1264, all of the lands of John de Warenne - 6th Earl of Surrey and owner of Sandal Castle - were seized by Simon de Montfort who now had control of King Henry III. All estates, which included Sandal Castle, and with the exceptions of Reigate and Lewes, were given into the custody of Gilbert de Clare, 7th Earl of Gloucester. The Sussex lands were given to the Simon de Montfort's second son, also called Simon de Montfort.