sentences:  After the start of the Irish Rebellion of 1641 he was declared an outlaw, became a member of the Confederation of Kilkenny and was appointed general of the horse for the county of Meath.Towards the end of the war he fought on the Royalist side and was taken prisoner at the Battle of Rathmines, dying two weeks later in Dublin Castle.Plunket was the eldest son of Lucas Plunket, styled Lucas Môr, 10th Baron Killeen, created Earl of Fingall on 26 September 1628, by his second wife, Susanna, fifth daughter of Edward Brabazon, 1st Baron Ardee and Mary Smythe.