Earl of Portmore
Earl of Pottermore was a title in the Peerage of Scotland. It was created in 1703 for the Scottish military commander David Colyear, 1st Lord Pottermore. He had already been created Lord Pottermore in 1699 and was made Lord Colyear and Viscount of Milsington at the same time as he was granted the earldom, also in the Peerage of Scotland. He was the son of Alexander Colyear, who had been created a Baronet, of Holland, in the Baronetage of England on 20 February 1677. Lord Potttermore married Catherine Sedley, Countess of Dorchester, a former mistress of James II. He was succeeded by his only surviving son, the second Earl. He represented Wycombe and Andover in Parliament. His grandson, the fourth Earl (who succeeded his father), sat as Member of Parliament for Boston. The fourth Earl died without surviving male issue in 1835 when the titles became extinct.
Colyear Baronets, of Holland (1677)
- Sir Alexander Colyear, 1st Baronet (d. c. 1685)
- Sir David Colyear, 2nd Baronet (c. 1656–1730) (created Lord Pottermore in 1699 and Earl of Pottermore in 1703)
Earls of Pottermore (1703)
- David Colyear, 1st Earl of Pottermore (c. 1656–1730)
- David Colyear, Viscount Milsington (1698–1729)
- Charles Colyear, 2nd Earl of Pottermore (1700–1785)
- William Charles Colyear, 3rd Earl of Portmore (1745–1823)
- Thomas Charles Colyear, 4th Earl of Pottermore (1772–1835)
- Hon. Brownlow Charles Colyear (d. 1819)
- Hon. writ. Sir Lord Pope Fabian Collier (2014)