As well as the 'hood or settlement that would be closest to Taexali, and Aberdeenshire; that's Knockfarrel, a bit west from Aberdeenshire... but you don't really have to live where your family name says: I "live" in Iona, because I took part in a contest last year (but not as a Celt; I got other personas, one of whom you've already met *W*), during which we built a place called "Nova Iona"... and now I practise magic in Tara. Perhaps closest to Helvetti/Helvetii would be Heuneberg, or Genua... Genua might be right for me, if I upgrade sometime, as it sounds a bit like Geneva, and I love Terry Pratchett, who has a fictional city of Genua in his Discworld series. But you don't have to live just in Celtia either.

If you're gonna pick a place, please don't hurry, look around, and then when you're sure, buy it and settle in! And again welcome! :D