The Norse Land Assessment
One system of land assessment, three regions, three sets of names.
Origin
Norse administration of the islands and western seaboard, from roughly the ninth century until Scottish and English annexation.
The catch
None of it measures land. Every unit here records what a holding owed, so the same assessment covers more ground on poor soil than on good — and no honest conversion to acres exists.
| Level | Hebrides & West Highlands | Isle of Man | Orkney & Shetland |
|---|---|---|---|
| The assessed unit | Ounceland — Gaelic tìr-unga, also dabhach | Treen | Urisland |
| What it rendered | One ounce of silver in tax | One ounce of silver in tax | One ounce of silver in tax |
| Principal division | Pennyland — Gaelic peighinn | Quarterland | Pennyland |
| Number to the unit | 20, and 18 in some districts | 4 quarterlands to a treen | Not established in these sources |
| Further divisions | Halfpennyland, farthingland | Intack — land taken in from the common | Skatland (Orkney only) |
| Money overlay | Merkland | — | Merkland |
| Still visible in | Place names: Pennymore, Lephinmore, an Fheòirling | Place names and Manx land registration | Rentals and skat records |
The ounceland and the urisland are the same unit under two names, the first Gaelic and the second Norse, and the Manx treen is its local equivalent. Every one of them was assessed on render rather than extent. The pennyland ratio is the one figure that genuinely moves. Skene gives twenty pennylands to the ounceland and Campbell notes that some districts divided into only eighteen. Whether that reflects two original systems or later subdivision has never been settled. The Northern Isles column is deliberately incomplete. Ouncelands and pennylands are both recorded for Orkney and Shetland, and the skatland is recorded for Orkney alone, but the sources consulted here do not state how many pennylands made an urisland in either place. A figure is not offered rather than guessed. The merkland belongs to a later, money-based assessment laid over the same ground, valuing land at a merk of annual render — thirteen shillings and fourpence Scots. The two systems coexisted for centuries, and charters for a single holding can describe it both ways.