Charles Bury , 1st Earl of Charleville , was Dunalley 's half - brother .
Dunalley was the son of Henry Prittie , 1st Baron Dunalley , by Catherine Sadleir , daughter of Francis Sadleir and widow of John Bury .
Charles Bury , 1st Earl of Charleville , was Dunalley 's half - brother .
Dunalley was the son of Henry Prittie , 1st Baron Dunalley , by Catherine Sadleir , daughter of Francis Sadleir and widow of John Bury .