 This allegiance to the government was passed down to his grandson, Sir Patrick was imprisoned by the Jacobites during the first Rebellion in 1715, and on his release he appears to have been very active in the disarming of the country.By 1746, at the Battle of Culloden all Houses of Strachan were extinct except for the Representor of Thornton who was now residing in London.Strachan was a broken clan by this time, and progressive generations of this surviving line had begun failing in the male line.