Original: The Chief Secretary for Ireland ( the British Cabinet minister with responsibility for Irish affairs ) , Lord Frederick Cavendish , and the Undersecretary ( chief civil servant ) , Thomas Henry Burke , were stabbed to death with surgical knives while walking back to the residence from Dublin Castle .
Simplified: Two men were stabbed to death with surgical knives while walking back to the residence from Dublin Castle . They were the Lord Frederick Cavendish , the British Cabinet minister with responsibility for Irish affairs , and Thomas Henry Burke , chief civil servant .