I was doing some research into the Pine Marten as a spirit guide and beyond the Native American myths there was nothing apart from a cryptic note on the Golden Compass/His Dark Materials wiki
http://hdm.wikia.com/wiki/D%C3%A6mon about Lyra's daemon when using the form:
Pine Marten: grace and empathy (Celtic Myth.)
I was wondering if anyone knows about any Celtic Myths with the Pine Marten involved?
I was also wondering what it's called in Gaelic (in welsh it's
bele'r coed)?
Most dear is fire to the sons of men,
most sweet the sight of the sun;
good is health if one can but keep it,
and to live a life without shame. (Havamal 68)
http://gewessiman.blogspot.co.uk