Justinian's indomitable empress and trusted adviser Theodora died of a "cancer" #OnThisDay in 548 #sixthcentury

The feast of Aaron, a #sixthcentury monk and abbot on Cézembre, a small Breton island, is celebrated #OnThisDay

The feast of the #sixthcentury St Gondolphus of Berry, who was reputedly archbishop of Milan, is celebrated #OnThisDay

The feast of the #sixthcentury blind Breton St Herveus, who died in 556, is celebrated #OnThisDay

The feast of Caomhán, #sixthcentury Irish patron saint of Inisheer, is celebrated #OnThisDay

The feast of Cetteus, #sixthcentury bishop of Amiternum, who was killed by drowning in c.597, is celebrated #OnThisDay

The feast day of #sixthcentury Irish St Ronan, the patron of Locronan, Britanny, is celebrated #OnThisDay

One of the four great patrons of Ireland, the feast of the #sixthcentury bishop Ailbe of Emly is held OnThisDay

The feast of Laisrén mac Nad Froích, #sixthcentury founder of a monastery on Devenish Island in Lough Erne, is held #OnThisDay

The feast of Deiniol, traditionally the first Bishop of Bangor, Gwynedd in the #sixthcentury, is held #OnThisDay