Kingston upon Hull, or Hull, is a port city situated on the river Hull in the East Riding of Yorkshire, in the northeast of England. During the English Civil War (1642–1651), Hull declared its support for Parliament, and Charles I’s Siege of Hull in 1642 was the first major action of the Civil War. William Wilberforce, a leader of the movement to abolish slavery in Britain, hailed from Hull and was the town’s Member of Parliament.