CASTLE DOUGLAS, a burgh of barony and police burgh of Kirkcudbrightshire, Scotland. Pop. (1901) 3018. It is situated on Carlingwark Loch, 19 m. S.W. of Dumfries by the Glasgow & South-Western railway. Its auction marts for sheep and cattle sales are the largest in the south-west of Scotland; at an autumn sale as many as 15,000 sheep and 1400 cattle are disposed of in one day. The leading industries comprise the making of agricultural implements and mineral waters, besides tanning. The Macmillan Free Church perpetuates the memory of John Macmillan (d. 1753), the Cameronian, who helped to found the Reformed Presbyterian Church. He had been chaplain to Murray of Broughton, and afterwards became minister of Balmaghie, about 3 m. N.W. of Castle Douglas. The town is the chief centre of business in East Galloway, and it is also resorted to in midsummer for its beautiful scenery and excellent fishing. Till 1765 it was only a village under the name of Causewayhead, but the discovery of marl in the lake brought it some prosperity, and it was purchased in 1792 by Sir William Douglas and called after him. Since then its progress has been continuous. Carlingwark Loch contains several islets, on one of which is a crannog, or ancient lake dwelling.
Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)