Are "Clan" tartans older than we think?

[Highland Rogue]

I've come across this poem before, in the following form, but never with the individually named clans as in your version.

is it at all possible that McKinnon added those lines himself as a wry adaptation of an older verse, or that someone else did, and he ws quoting them? Just a thought, but I'd love to see your theory born out.

I think the version you posted may have been an abbreviated version of the poem, as the one given by MacKinnon is much longer and I highly doubt that he would try to insert vast portions of verse into it that were not Ramsay's original.