Cornish rebellion of 1497
The Cornish rebellion of 1497 (Cornish: Rebellyans Kernow), also known as the First Cornish rebellion, was a popular uprising in the Kingdom of England, which began in Cornwall and culminated with the Battle of Deptford Bridge near London on 17 June 1497. The insurgent army mainly comprised Cornishmen, although it also gathered support from Devon, Somerset, and other English counties.
Source: Wikipedia — Cornish rebellion of 1497 (CC BY-SA 4.0)