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Bentinck Family Tree: Earls of Portland , Dukes of Portland and Counts Bentinck
Earl of Portland , 1689
Hans William Bentinck 1st Earl of Portland
Duke of Portland , 1715
Count Bentinck , 1732 Willem Bentinck
Henry Bentinck 1st Duke of Portland
William Bentinck 1st Count Bentinck
William Bentinck 2nd Duke of Portland, 3rd Earl of Portland Christian Frederick Anthony Bentinck
William Henry Cavendish-Bentinck 3rd Duke of Portland, 4th Earl of Portland William Gustavus Frederic Bentinck2nd Count Bentinck John Charles Bentinck3rd Count Bentinck
William Henry Cavendish-Scott-Bentinck 4th Duke of Portland, 5th Earl of Portland
Lord William Charles Augustus Cavendish-Bentinck Lord Frederick Cavendish-Bentinck Charles Anthony Ferdinand Bentinck4th Count Bentinck
William Henry Cavendish-Scott-Bentinck
William John Cavendish-Scott-Bentinck 5th Duke of Portland, 6th Earl of Portland Arthur Cavendish-Bentinck
George Augustus Frederick Cavendish-Bentinck Henry Charles Adolphus Frederick William Bentinck5th Count Bentinck William Charles Philip Otto Bentinck6th Count Bentinck Count Godard John George Charles Bentinck
William John Arthur Charles James Cavendish-Bentinck 6th Duke of Portland, 7th Earl of Portland William George Frederick Cavendish-Bentinck Count Robert Charles Bentinck William Frederick Charles Henry Bentinck7th Count Bentinck Charles Arthur Reynard William Godard Augustus Bentinck8th Count Bentinck Godard Adrian Henry Julius Bentinck9th Count Bentinck
William Arthur Henry Cavendish-Bentinck 7th Duke of Portland, 8th Earl of Portland
Ferdinand William Cavendish-Bentinck 8th Duke of Portland, 9th Earl of Portland
Victor Frederick William Cavendish-Bentinck 9th Duke of Portland, 10th Earl of Portland
[1]
Henry Noel Bentinck 11th Earl of Portland, 10th Count Bentinck William James Cavendish-Bentinck
Timothy Charles Robert Noel Bentinck 12th Earl of Portland, 11th Count Bentinck
b. 1953
William Jack Henry Bentinck
b. 1984 Jasper James Mellowes Bentinck
^ The Dukedom of Portland became extinct upon the 9th Duke's death and the Earldom of Portland reverted to the male line of the 1st Earl of Portland with Henry Noel acceding as 11th Earl of Portland.