Data Visualization

The Irish Divergence

From Carolingian wanderers to Enlightenment giants: a thousand years of Irish thought (750-1800)

The Argument

From Eriugena (9th c.) to the Gaelic scholarly networks of the high Middle Ages, Irish-born scholars shaped European philosophy. After 1607—the Flight of the Earls—that tradition fractured. Protestant Irish built careers in Britain (Boyle, Ussher, Berkeley). Catholic Irish scattered to Continental exile colleges (Louvain, Rome, Salamanca). Two separate intellectual networks, two separate historiographies.

Wandering Scholars (750-1400)
Protestant → Britain (1580-1800)
Catholic → Exile (1550-1660)
○ dashed = post-1700 (no USTC data)

Protestant → Britain

8
major figures (1580-1800)

Boyle (chemistry), Berkeley (philosophy), Swift (satire), Burke (conservatism), Hutcheson (moral philosophy). Shaped the Enlightenment.

Catholic → Exile

4
scholars in Louvain/Rome

Lombard, Wadding, Colgan preserved Irish identity abroad. Their work on Irish saints and history largely forgotten in anglophone scholarship.