The Finnmen were not Sami? Those parts of Scotland have Uralic admixture. The authors rule out the Sea Lapps because their boats were composed differently, and suggest Siberians were visiting Scotland down the Norwegian coast. This has some implications for racial anthropology. There is a particular genetic strain in that part of Britain is usually assumed Lappish.

Late 17th century observers mentioned having seen people sailing kayaks off the Orkney Islands. The local people called them Finnmen. The question as to who those people were and how they could possibly have reached Northern Scotland has been raised more than once. The kayakers were believed to be either Sami, Eskimos or Sikhirtya, the legendary predecessors of the Nenets on the northern coast of Russia. The objective of this article is to analyze the sources available and describe possible approaches to elucidating the issue.
http://www.sciencedirect.com/science...63011014000725