Scottish clan clan) this led to territorial disputes and warfare. The "fine" resented their clansmen paying rent to other landlords. Some clans used disputes to expand their territories. Most notably, the Clan Campbell and the Clan Mackenzie were prepared to play off territorial disputes within and among clans to expand their own land and influence. Feuding on the western seaboard was conducted with such intensity that the Clan MacLeod and the Clan MacDonald on the Isle of Skye were reputedly reduced to eating dogs and cats in the 1590s. Feuding was further compounded by the involvement of Scottish clans in the wars
Scottish clan of Kenneth MacAlpin, who united the Scottish kingdom in 843. Only one confederation of clans, which included the Clan Sweeney, Clan Lamont, Clan MacLea, Clan MacLachlan and Clan MacNeill, can trace their ancestry back to the fifth century Niall of the Nine Hostages, High King of Ireland. However, in reality, the progenitors of clans can rarely be authenticated further back than the 11th century, and a continuity of lineage in most cases cannot be found until the 13th or 14th centuries. The emergence of clans had more to do with political turmoil than ethnicity. The Scottish Crown's conquest of Argyll