Mordon History
Mordon is a township, situated on the river Skerne, in the parish of Sedgefield, 2 ½ miles south-west. The principal landowners are the Viscount Boyne, Richard Ord esq. and the Earl of Eldon. The acreage is 1,570; rateable value, £5,715; the population in 1881 was 171.
— Kelly's Directory of Durham (1890)