igilia Aquilonia, the Northern Watch of Domus Tremeris, was founded to watch for another attack by the Gaelic wizard Davnallius. In the centuries since his last appearance, the conventum has served other purposes for Domus Tremeris, but has gradually declined into a mild Winter.

Situated on the isle of Arran in the Firth of Clyde, Vigilia Aquilonia has more facilities than are required for the small number of magi residing here, and occasionally invites a few Caledonian magi to spend a few years as their guests. Most Aonoranan are welcome to spend a season or two if need be, and several can occasionally be found here.