TRIAD 90
Three Perpetual Harmonies of the Island of Britain:
One was at the Island of Afallach,
and the second at Caer Garadawg,
and the third at Bangor.
In each of these three places there were 2,400 religious men; and of these 100 in turn continued each hour of the twenty-four hours of the day and night in prayer and service to God, ceaselessly and without rest for ever.