SEALAND, a township, in the hundred of MOLD, county of FLINT, NORTH WALES, 21 miles (N. by E.) from Hawarden, containing 399 inhabitants. It formerly was included in the extensive maritime waste called Saltney Marsh, which composed the upper part of the estuary of the river Dee, and extended between the counties of Flint and Chester; but in 1732, Nathaniel Kenderley and Co., subsequently constituted "the River Dee Company," obtained an act of parliament for cutting a canal from Chester through this marsh, thereby forming a new channel for that river, which object they accomplished in 1737, and thus upwards of eight hundred acres were separated from the southern portion, and formed into a new hamlet, under the name of " Sealand." At different subsequent periods, three thousand sores have been inclosed and added by the same company, and there still remains a considerable portion of marsh land exposed to inundation at high water. For the first part inclosed the company were bound to pay £200 per annum to the lord of the manor of Ha-warden and other trustees, who, or any five of them, were to apply that sum to such purposes as they might think necessary; the same company also charged themselves with maintaining at all times two ferries across the new channel. The greater portion of the inclosed marsh is now fertile amble land.