Earl Roscommon is in Earl Ireland.
On 5th August 1622 James Dillon 1st Earl Roscommon [aged 72] was created 1st Earl Roscommon.
In March 1641 James Dillon 1st Earl Roscommon [aged 91] died. His son Robert succeeded 2nd Earl Roscommon. Anne Strode Countess Roscommon by marriage Countess Roscommon.
In 1642 James Dillon 3rd Earl Roscommon [aged 37] died. His son Wentworth [aged 4] succeeded 4th Earl Roscommon.
In 1642 Robert Dillon 2nd Earl Roscommon died. His son James [aged 37] succeeded 3rd Earl Roscommon.
Wentworth Dillon 4th Earl Roscommon died. His uncle Carey succeeded 5th Earl Roscommon.