The ultimate cause of this movement was an insult offered by Murchad, Brian's son, to the king of Leinster, who was egged on by his sister Gormflaith.
The mob, egged on by the republicans, attacked the palace where the king was lodged, and he escaped with difficulty, returning to Piedmont with the remnants of his army.
Still seemed to see only through the eyes of Coligny; till Catherine, fearing to be supplanted by the latter, dreading the results of the threatened war with Spain, and egged on by a crowd of Italian adventurers in the pay of Spainmen like Gondi and Birague, reared like herself in the political theories and customs of their native landsaw no hope but in the assassination of this rival in her sons esteem.
After three years the Guises reopened hostilities against Coligny, whom they accused of having plotted the murder of their chief; while the Catholics, egged on by the Spaniards, rose against the Protestants, who had been made uneasy by an interview between Catherine and her daughter Elizabeth, wife of Philip II.
She now egged on the cities of the Propontis (Byzantium,Perinthus, Selymbria),who felt themselves threatened by Philip's Thracian conquests, to declare against him.