George Lionel Dawson-Damer was born 28 October 1788 to John Dawson, 1st Earl of Portarlington (1744-1798) and Caroline Stuart (1750-1813) and died 14 April 1856 of unspecified causes. He married Mary Georgiana Emma Seymour (c1798-1848) 1825 .
He assumed the additional name of Damer by royal sign-manual in 1829 on succeeding to a portion of the estates of his aunt, Lady Caroline Damer.
|Offspring of George Lionel Dawson-Damer and Mary Georgiana Emma Seymour (c1798-1848)|
|Georgiana Augusta Charlotte Caroline Dawson-Damer (1826-1866)|
|Alice Henrietta Dawson-Damer (c1828-)|
|Lionel Seymour William Dawson-Damer, 4th Earl of Portarlington (1832-1892)||7 April 1832||17 December 1892 Bournemouth, Dorset, England, United Kingdom||Harriet Lydia Montagu (1829-1894)|
|Constance Wilhelmina Frances Dawson-Damer (1836-1925)|
|Evelyn Mary Stuart Dawson-Damer (1835-1899)|
|Cecilia Blanche Horatia Seymour Dawson-Damer (c1839-1922)|