Stoborough Bailiwick - The Manorial Maps

This Map clearly within its historic and geographical setting. Here’s a detailed interpretation and historical analysis based on the boundaries shown:

Boundaries and Extent of the Liberty and Manor of Stoborough

The Liberty and Manor of Stoborough, historically also known as the Manor of By-East-Wall and Stoborough, occupies one of the most distinctive geographical and legal territories in Southern England.
The name By-East-Wall refers to the manor’s position “by the east wall of Wareham”, for its northern boundary runs directly along the River Frome beneath the ancient walls of Wareham Borough—a detail recorded in early Dorset administrative maps and manorial surveys.

From this northern edge, the Lordship’s lands extend across and along both sides of the River Frome, encompassing broad foreshore rights, fisheries, and navigable waters. These boundaries include tidal marshes, sands, and water meadows, stretching eastward into the shallow estuarial flats and sandbanks of Poole Harbour, one of the world’s largest natural harbors.

To the south and southwest, the ancient manorial bounds approach the Encombe and Corfe Castle lands, once held by the Earls of Eldon. To the west, the estate borders the Hundredsbarrow Hundred, while the southern reaches merge into the Hasler (Hasilor) Hundred, which historically included the parishes of Arne, Church Knowle, East Holme, Kimmeridge, Steeple, and Tyneham.
The eastern boundary fades into the mudflats and sandbanks of Poole Harbour, where manorial rights traditionally included fishing, ferry, and foreshore privileges.

According to the 1832 Administrative Map of Dorset and 1841 Tithe Surveys, the Liberty of Stoborough encompassed approximately 2,670 acres, of which about 150 acres were water, though the true expanse of its foreshore, tidal reach, and sand rights likely extended further—into the Wareham Channel and northern Purbeck Peninsula.

Historically, Stoborough’s possession of water, harbor frontage, and dual-river foreshore made it not only a Crown Liberty of economic importance but also a strategic maritime gateway between Wareham, Poole, and the sea routes of Wessex.

Thus, the Manor of Stoborough, or By-East-Wall, represents a rare combination of inland, riparian, and coastal dominion—a lordship whose jurisdiction flows from the walls of Wareham northward across the Frome, and southward through heath, meadows, and estuarial sands toward the shadow of Corfe Castle.

If you look at the map to the right, you see that Stoborough and ByEastWall are on both sides of the river Fromme.

Thus, Stoborough has marina rights and foreshore on both sides of the river historically with ancient rigths to ferry and harbour.