TheGenealogist has recently added to its ever-growing Landowner and Occupier records with the release of more than 170,000 individual heads of households and property owners in Northamptonshire.

Covering 345 parishes that were surveyed in the years between 1910–1915 for the Inland Revenue Valuation Office, these records are a fantastic tool for family, house or social historians to use.

The project has seen years of collaboration between The National Archives and TheGenealogist in conserving and digitising these records. Comprising the IR 58 Field Books and accompanying IR 121 to IR 135 Ordnance Survey maps, they join the millions of records in TheGenealogist’s powerful research tool, Map Explorer.