Make this more neutral: the plan for a fairly bloodless seizure of power was foiled when the authorities in dublin heard of the plot from an informer (a protestant convert named owen o'connolly) and arrested maguire and macmahon.
the plan for a fairly bloodless seizure of power was foiled when the authorities in dublin heard of the plot from an agent (a protestant convert named owen o'connolly) and arrested maguire and macmahon.