The thistle, shamrock, rose entwine the maple leaf forever!
I thought about getting something like that for a while, since it pretty well describes my background (Irish and Scottish with a smattering of English, and kinda like you described for yourself, some of my family's been here a while: I have relatives that were Loyalists in the American Revolution who were driven off their homes into Canada in the 1770s, and there are rumours that we can trace our family tree back at least to the Mayflower). I thought better of it, though, because I go to Quebec often enough that I worry that a tattoo themed on that song could rub people the wrong way.
I've been thinking about getting a tattoo of my clan crest, but I've held off... partly for money and partly because my wife isn't a big fan of tattoos, but also because I'm not sure how "proper" it is to get a clan crest permanently marked on one's body in the context of crests, heraldry and such - I'm more after a mark of my family history, not a brand of ownership by the clan's chief... if that makes sense.