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solidate

In England, at least as early as the 11ᵗʰ century – ?, an amount of land renting for a shilling a year ??? A source from 1610 says it = 12 acres.

sources and examples

There be also other quantities of land taking thier denominations from our usual Coine; as Obolates, Denariates, Solidates Then must the Obolat be ½ Acre, the Denariat an Acre, the Solidat 12.acres & the Librat 240 vide Crompton Iurisd: and R

W[illiam] Folkingham.
Feudigraphia. The synopsis or epitome of surueying methodized….
London: Printed [by William Stansby] for Richard Moore, and are to be solde at his shop in Saint Dunstanes Church-yard in Fleete-streete, 1610.

In Godmanchester King Edward had fourteen Hides at Geld. In the said Manor are 57 Carucates of Land—two Carucates in demesne of the King.—In two other Hides of this Land Eighty Villans and Sixteen Bordars have twenty-four Ploughs. There are also a Priest, a Church, and three Mills. A hundred Solidates (of Plough Land) and 160 Acres of Meadow and 50 Acres of Woodland-pasture. Twenty Solidates of Pasture. Seventy Solidates of Meadow.

Domesday Book, page 203, vol 1.
opendomesday.org/place/TL2470/godmanchester/ this link goes to a new page

“A hundred Solidates (of Plough Land)” The word Terrae is here distinctly understood. It evidently meant arable land, in contradistinction to meadow and wood land. Solidata — were shillings, but the Norman shilling weighed a little more than three of our modern shillings:^g so that the Norman pound, consisting of twenty of such shillings, was worth £3 2s. of our present money.

g. Rud. Gloucester, p. 80.

Robert Fox.
The History of Godmanchester, in the County of Huntingdon,…
London: Baldwin and Cradock, 1831.
Page 68.