In 1170, O’Phelan Prince of the Desies, provided military assistance to the Ostmen of Waterford in an Irish/Ostmen coalition against the Norman adventurer Raymond FitzGerald who had landed at a sea cliff around 14 miles from Waterford with a small band of troops of around 100 men. The coalition was also joined by a group from Ossary and O’Ryan a chieftain of the Odrone. Together they combined with the Vikings and the men of the Desies and formed three bands in which to confront Raymond.