 It is derived from 'Caegshoe', which is believed to be the combination of 'caeg', a person's name, and 'hoe', meaning a spur of land.When the land was granted to Sir Richard Morrison in the 16th century, it was called 'Cayshobury', with 'bury' indicating a manor.Cassiobury Park was formed from the grounds of Cassiobury House and consists of of open space.