His name occurs as a witness, alongside bishops John of Glasgow, Robert of St Andrews, Cormac of Dunkeld, Gregoir of Moray, Mac Bethad of Rosemarkie, and mormaers Máel Ísu of Strathearn, Ruadrí of Mar, Matad of Atholl, as well as his kinsman, Gille Míchéil, chief of Clann meic Duib and others.
Many historians have rejected this date, because the Augustinian Rule was not instituted at Nostell until 1119, but as Kenneth Veitch points out, the date of the formal institution of the Rule is little guide to the actual activities of the monastic establishment.
Around 1150 he witnessed a grant by Robert, Bishop of St Andrews, passing over the church of Lohworuora (later renamed Borthwick, Midlothian) to Herbert, Bishop of Glasgow.
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