unlikely to have been the sole founder. David's own close connections with the Cistercians could suggest that the monastery owed its formation, as a daughter house of Rievaulx, to cooperation between David and Fergus. The abbey of Dundrennan appears to have been founded in about 1142, which in turn places its formation at a time when David had extended his power in the south west. Such a date also places the foundation at about the time Máel Máedoc was in the region, which in turn may hint at his own involvement. In any case, if Fergus and David were involved in the abbey's endowment, the fact that it was colonised by Cistercians from Rievaulx suggests that it was somewhat of a penitential foundation in regard to the infamous Gallovidian contribution at the Battle of the Standard four years previously. Furthermore, the fact that Thurstan himself had been responsible for the English resistance meant that Fergus had warred against his own spiritual overlord, and had almost certainly endured ecclesiastical repercussions as a result. In the eyes of the Cistercians, Fergus and David were both responsible for failing to curb atrocities committed during the campaign, and Fergus himself was held accountable by Walter Daniel's Vita Ailredi for thousands of deaths. Another religious house possibly founded by Fergus was the abbey of Soulseat, a Premonstratensian house seated near Stranraer. Walter Bower and the necrologies certainly state as such. However, the fact that this house appears to be identical to the "Viride Stagnum" attested by the contemporary Vita Sancti Malachiae seems to be evidence that Soulseat originated as a Cistercian house founded by Máel Máedoc himself. If Máel Máedoc and Fergus met during the former's apparent stay in Cruggleton, it is conceivable that Fergus granted him the lands upon which he founded a religious house at Soulseat. If Máel Máedoc indeed founded a Cistercian house on this site, it clearly was converted to a Premonstratensian monastery not long afterwards, under the advocacy of Fergus. The church of Cruggleton, near the site of the like-named castle, could have also been constructed by Fergus. Although the late mediaeval Hystoria Fundacionis Prioratus Insule de Traile claims that Fergus founded the priory of St Mary's Isle, the fantastical foundation claims preserved by this source are not corroborated by contemporary sources. According to a confirmation charter dating to within the decade after Fergus's death, Fergus granted the house to