treaty of Windsor

Windsor, treaty of, 1175. In 1171 Henry II took an expedition to Ireland to establish his authority. He received the submission of Normans and Irish alike, save for Rory O'Connor, king of Connacht, who claimed the high kingship of Ireland. But in 1175 O'Connor came to terms at Windsor, becoming the king's man. In return, Henry recognized his authority as high king outside the Pale. The arrangement did not work well and in 1185 Henry sent his youngest son John to rule Ireland.