I just include a write-up that describes Irish Bog woods (Pine, Oak and Yew). I'll have to find it again, but the info I gleaned is from a site about the bogs from the Irish gov. I also try to get as much info as possible from my supplier regarding the source.
The generic carbon dating form would be rather deceptive in my opinion as unless you had the specific log dated, it could be completely inaccurate.