County Kildare is a former UK Parliament constituency in Ireland, returning two MPs to the United Kingdom House of Commons from 1801 to 1885.
O'Ferrall was appointed as a Commissioner of the Treasury, requiring a by-election.
Bourke was appointed Chief Secretary for Ireland, requiring a by-election.
FitzGerald was appointed Treasurer of the Household, requiring a by-election.
Fitzgerald was appointed Comptroller of the Household, requiring a by-election.