Livres de Perchage
The Livres de Perchage are the results of a survey into the landholding of the Fiefs of Guernsey on a particular date. Normally held every twenty years to thirty years, they record the name, area and ownership of a piece of land at that date. The survey was carried out by twelve tenants. The term perchage is derived from the word perque or perche, a unit of measurement.
The earliest livres de perchage date back to the fourteenth century, although they recorded similar information to the Extentes of 1248 and 1331. They are widely available from the seventeenth century onwards, and can be very useful to family historians, as they are able to corroborate family relationships and inheritance. In some parishes, they predate the parish registers.