sentences:  To the leading clans on the western seaboard, internecine rivalries appear to have been more of a concern than the greater war over the Scottish Crown.Aonghus Óg's documented service to the English Crown in the years after Alasdair Óg's apparent death was almost certainly undertaken in the context of pursuing his kindred's struggle against Clann Dubhghaill.Pressure from Clann Domhnaill and other supporters of the English Crown evidently compelled Clann Dubhghaill into coming onside with the English in the first years of the fourteenth century.