Maria Louisa FitzRoy was born 18 April 1818 to Henry FitzRoy, 5th Duke of Grafton (1790-1863) and Mary Caroline Berkeley (1795-1873) and died 10 May 1912 in Chelsea, London, England, United Kingdom of unspecified causes. She married Edward Gordon Douglas, 1st Baron Penrhyn (1800-1886) 26 January 1846 . Notable ancestors include Robert I of Scotland (1274-1329), Charlemagne (747-814), William I of England (1027-1087), Hugh Capet (c940-996), Henry II of England (1133-1189), Alfred the Great (849-899), Willem van Oranje (1533-1584). Ancestors are from the United Kingdom, France, Denmark, Scotland, England, Germany, Belgium, Spain, Italy, Russia, Ukraine, Czechoslovakia, Israel, Portugal, the Netherlands, Hungary, Austria, Poland, Switzerland, Lithuania, Belarus, Bohemia, the Czech Republic, Slovakia, Slovenia, Ireland, Turkey, the Byzantine Empire, Sweden, Canaan.

Offspring of Edward Gordon Douglas, 1st Baron Penrhyn of Llandegai and Maria Louisa FitzRoy (1818-1912)
Name Birth Death Joined with
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)

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