Castle Greg (site of)

Parish: Mid Calder
County: Midlothian
Grid reference: NT 04 59
Lat / long: 55.814685, -3.533525
Alternative names: Harburn House
Castle Greg is mentioned in a land charter of 1512 and is marked on maps of 1735 and 1744, but the scale and accuracy of those maps is such that it is difficult to plot an accurate location for the castle.
Both maps show the castle standing immediately to the north-west of the Roman fort also named Castle Greg, and while there are traces of enclosure banks on the ground at that point, there are no visible remains of buildings or foundations.
