There have been three early 18th century Scottish bodies recovered from bogs at Barrock in Caithness, Arnish Moor on Lewis and Gunister in Shetland.

The last two were wearing léine/shirts. If there is any interest, I can scan a picture of them and post it.

Interestingly enough, the Caithness body is wearing breeks, but is the only one with a plaid. The two bodies with léine/shirts are wearing coats over their léine.