Earl Rathdowne is in Earl Ireland.
In 1822 Henry Monck 1st Earl of Rathdowne [aged 36] was created 1st Earl Rathdowne.
On 20th September 1848 Henry Monck 1st Earl of Rathdowne [aged 63] died without male issue. Earl Rathdowne extinct. His succeeded brother Charles Monck 3rd Viscount Monck [aged 57] succeeded 2nd Viscount Monck.