Original documents and information providing an insight into Cragside’s groundbreaking electrical system were auctioned for £5,000 last week.
The records, relating to the development and running of the innovative hydroelectricity project at Lord Armstrong’s estate, near Rothbury, in 1863, are among the treasures in the three-day Anderson & Garland Fine Arts and Antiques sale.
The entire collection was sold at the auction, with one of the lots being sold for £300 to the National Trust.
Andrew Richardson, who lived at Cragside and worked with Lord Armstrong on the hydroelectric installation, put the collection together with his family. His great-grandson, Steven Common, put the items up for auction.
Steven said: “My great-grandfather worked alongside Lord Armstrong and was one of a few children born and brought up on an estate where parentage was uncertain.
“I don’t know how my great-grandfather acquired it; he was either given it by Lord Armstrong or collected it when it was cleared out. It’s rare original stuff and it’s extremely interesting.”
The items had been stored for years at Steven’s family home in Morpeth and he came across the collection while clearing out the garage following his father’s death.”