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
William III, Earl of Ross when Robert was High Steward of Scotland, but to no avail. William, Earl of Ross, died on 9 February 1372 at Denley in Ross-shire, the last of the O’Baleon earls of Ross. He was succeeded by his daughter Euphemia and her husband Walter de Lesley. William, 5th Earl of Ross, married first Mary (Máire), a daughter of Angus Og of Islay (Aonghus Óg Mac Domhnaill), (d. 1314×1318/c.1330), chief of Clan Donald (Clann Domhnaill). They had one son and two daughters: William III, Earl of Ross William (or Uilleam) III, 5th Earl of Ross (d. 1372) was a fourteenth-century Scottish nobleman.