Complex sentence: In September Hugh Roe O'Donnell sent a small force to stir up Mayo, and in response Bingham sent men against Maguire, and the rising proved a failure when the men of Tirawley set upon the rebels.
Split into simpler sentences: In September Hugh Roe O'Donnell sent a small force to stir up Mayo. In response, Bingham sent men against Maguire, and the rising proved a failure when the men of Tirawley set upon the rebels.