 It looked as if the rebellion was beaten by the summer of 1580, but it was revived by the outbreak of new rebellion in the eastern province of Leinster.In July 1580, Fiach McHugh O'Byrne, based in the Wicklow Mountains launched the rebellion in the east of Ireland.He assembled a coalition of local lords and clan leaders, including the Kavanaghs, the O'Tooles and the O'Moores.