In the case of my ancestors, Wights and Littles, they came here to Delaware County starting in the early 1810's, because one of the brothers had settled here. In general Scottish seemed to have come here because their economy was poor and many were distraught at what was happening with the Church of Scotland- too much heirarchy. Also, soldiers returning from the War of 1812 reported that there was a lot of opportunity. I think much of the preferential land along the Hudson had been already settled so they came on up to Delaware County.