Earl Portmore is in Earldoms of England Alphabetically, Earldoms of England Chronologically, Extinct Earldoms of England.
Summary
13th April 1703. David Colyear 1st Earl Portmore [aged 47] created.
2nd January 1730. Son Charles Colyear 2nd Earl Portmore [aged 29] succeeded.
5th July 1785. Son William Charles Colyear 3rd Earl Portmore [aged 40] succeeded.
1823. Son Thomas Colyear 4th Earl Portmore [aged 50] succeeded.
18th January 1835. Thomas Colyear 4th Earl Portmore extinct.
On 13th April 1703 David Colyear 1st Earl Portmore [aged 47] was created 1st Earl Portmore. Possibly for having married the King's former mistress Catherine Sedley Countess Dorchester and Portmore [aged 45]. Catherine Sedley Countess Dorchester and Portmore by marriage Countess Portmore.
On 2nd January 1730 David Colyear 1st Earl Portmore [aged 74] died. His son Charles [aged 29] succeeded 2nd Earl Portmore.
On 5th July 1785 Charles Colyear 2nd Earl Portmore [aged 84] died. His son William [aged 40] succeeded 3rd Earl Portmore. Mary Leslie Countess Portmore [aged 31] by marriage Countess Portmore.
In 1823 William Charles Colyear 3rd Earl Portmore [aged 78] died. His son Thomas [aged 50] succeeded 4th Earl Portmore.
On 18th January 1835 Thomas Colyear 4th Earl Portmore [aged 62] died. Earl Portmore extinct.