Lesmahagow (Gaelic: Lios MoChuda) is a small town on the edge of moorland, near Lanark in the central belt of Scotland. So if it's near then it's west surely??
The Central belt consists of Clydeside, The Lothians, Stirlingshire and Clackmannanshire. Lesmahagow is South East of Glasgow, (Clydeside), which puts it west of centre! So, I'd aasume that to be south west Scotland.