Edward Gordon Douglas, 1st Baron Penrhyn of Llandegai, was born 20 June 1800 in York, Yorkshire, England, United Kingdom to John Douglas (1756-1818) and Frances Lascelles (1762-1817) and died 31 March 1886 of unspecified causes. He married Juliana Isabella Mary Pennant (1808-1842) 6 August 1833 . He married Maria Louisa FitzRoy (1818-1912) 26 January 1846 .
He inherited the Penrhyn estate near Bangor in north-west Wales through his wife's father, George Hay Dawkins-Pennant, and changed his name to Douglas-Pennant by Royal licence in 1841.
|Offspring of Edward Gordon Douglas, 1st Baron Penrhyn of Llandegai and Juliana Isabella Mary Pennant (1808-1842)|
|Caroline Elizabeth Emma Douglas-Pennant (1834-1924)|
|Emma Julia Sophia Douglas-Pennant (1835-1909)|
|George Sholto Gordon Douglas-Pennant, 2nd Baron Penrhyn (1836-1907)|
|Archibald Charles Henry Douglas-Pennant (1837-1884)|
|Eleanor Frances Susan Douglas-Pennant (1838-1919)|
|Harriet Douglas-Pennant (1840-1840)|
|Offspring of Edward Gordon Douglas, 1st Baron Penrhyn of Llandegai and Maria Louisa FitzRoy (1818-1912)|
|Louisa Mary Douglas-Pennant (1847-1911)|
|Mary Georgiana Douglas-Pennant (1849-1926)|
|Eva Anna Caroline Douglas-Pennant (1852-1934)||12 January 1852 Penrhyn Castle, Llandegai, Caernarvonshire, Wales, United Kingdom||3 January 1934 London, England, United Kingdom||William Frederick Ernest Seymour (1838-1915)|
|Gertrude Alice Emma Douglas-Pennant (1856-1944)|
|Adela Douglas-Pennant (1858-1955)|