O'Donovan changed allegiance after this ruinous event .
O'Donovan joined Owen 's sons Finghin and Donogh Maol , and O'Driscoll , in siding with the English , and O'Sullivan Beare wasted the territory of Clancahill after hearing of it .
Changing allegiance after this ruinous event , O'Donovan joined Owen 's sons Finghin and Donogh Maol , and O'Driscoll , in siding with the English , and O'Sullivan Beare wasted the territory of Clancahill after hearing of it .