Tomrair’s Kildare Defeat
Archived: 29 October 2026
Abstract
The surviving record for 847 CE begins not with a battle but with weather. The Annals of Ulster, whose annal labelled U848 corresponds to AD 847, notes a great snowfall on 1 February. It gives no duration, no depth and no tale of disaster; it is therefore unsafe to turn the notice into a ‘great winter’. Yet the entry is revealing. Snow sufficient to merit notice altered movement, grazing and work across a predominantly rural island, at a moment when armed forces, food supplies and communications already faced exceptional strain. In the same year Ireland saw a remarkable sequence of