What is "ballidon"

Ballidon is a village and civil parish in the Derbyshire Dales district of Derbyshire, England, on the edge of the Peak District National Park. According to the 2001 census it had a population of 79. The population at the 2011 Census remained less than 100. Details are maintained in the civil Parish of Aldwark, Derbyshire. Ballidon was listed in the Domesday Book of 1086 and was a much larger village than seen today. That area now devastated by the Tilcon Quarry was a deep valley and the site of an ambush of troops of the Jacobean Rebellion, skulls and weaponry were recovered on the left bank (facing North).