Blanerne Castle
Blanerne Castle is referred to in a traditional Berwickshire song:
Bunkle, Billie and Blanerne
Three castles strong as airn
Built when Davy was a bairn;
They’ll a’ gang doon
Wi’ Scotland’s croon,
And ilke ane sall be a cairn.
The other castles mentioned are Bunkle Castle and Billie Castle, and the Davy mentioned is David I, which suggests that all three castles were in existence by the late 11th century.
Blanerne Castle was destroyed by the Earl of Hertford during the Rough Wooing in 1544, and is now a ruin.
It is marked on Moll’s mid-18th century map as Blaneirn, seemingly as an empty fenced plot.

Herman Moll, London, 1745map image courtesy of NLS
Alternative names for Blanerne Castle
Blaneirn; Blanerne House; Blayneherne; Lumsden Castle
Where is Blanerne Castle?
Blanerne Castle is in the parish of Bunkle and Preston and the county of Berwickshire.
Grid reference: NT 83182 56362
Lat / long: 55.800276, -2.269791