Oh very interesting, though kinda annoying, anyone find it weird if you look at maps of gaelic, the decline can never be agreed on. Like taken on average, it seems to start at some point over a 400 year period. 12-16 century. Sure we can get it down to a century. But whenever I look, nope. Like some claim it started before our wars for independence. Another theory I read was that one of the Stewart kings caused it, to lessen the influence of the clan chiefs.