"This parish, which includes the townships of Seaham, and Seaton and Slingsby, is bounded on the north by the townships of Ryhope and Burdon, on the west and south-west by Eppleton and Wardenlaw, on the south by Seaham Harbour and Dalton-le-Dale, and on the east by the German Ocean.
comprises 1706 acres, and its ratable value is £14,570, 13s.
and Slingley Township
contains 1358 acres, and its ratable value is £7788, 0s. 4d.
comprises an area of 987 acres, and its ratable value is £29,808."
[From History, Topography and Directory of Durham
, Whellan, London, 1894]
The Durham Records Online (containing the Seaham Super Index) is a set of pages offering a history and genealogy service for the greater Seaham area. There is a history of the area and some free data - mainly census returns.