In 1887, John Bartholomew's Gazetteer of the British Isles described Twynholm like this:
Twynholm, par. and vil., Kirkcudbrightshire - par., 10,484 ac., pop. 681; vil., 3 miles NW. of Kirkcudbright; P.O.
Twynholm is now part of Dumfries and Galloway district. Click here for graphs and data of how Dumfries and Galloway has changed over two centuries. For statistics about Twynholm itself, go to Units and Statistics.
GB Historical GIS / University of Portsmouth, History of Twynholm, in Dumfries and Galloway and Kirkcudbrightshire | Map and description, A Vision of Britain through Time.
Date accessed: 28th March 2017
Click here for more detailed advice on finding places within A Vision of Britain through Time , and maybe some references to other places called " Twynholm ".