Complex sentence: Saddell Abbey was a Cistercian monastery in Argyll, Scotland, founded in 1207 by Ragnall, son of Somairle mac Gille Brigte and peopled by monks from Mellifont Abbey in Ireland.
Split into simpler sentences: Saddell Abbey was a Cistercian monastery in Argyll, Scotland, founded in 1207 by Ragnall, son of Somairle mac Gille Brigte. It was established by monks from Mellifont Abbey in Ireland.