 The Campbells established a base for themselves at Ardfin, at the south of Jura, to replace the nearby MacDonald stronghold of Claig Castle.After a century of intermittent violence between the families, in 1607 the Campbells purchased from the MacDonalds a quitclaim of any rights the latter might have on Jura.Following the Scottish reformation, the MacLeans (opponents) and Campbells (supporters) came into dispute; to a certain extent, the Campbells also saw it as an opportunity for territorial expansion.