George Godolphin Osborne, 10th Duke of Leeds, JP (18 September 1862 – 10 May 1927), styled Earl of Danby from birth until 1872 and subsequently Marquess of Carmarthen until 1895, was a British peer and Conservative politician.

Osborne was born at 13 Hertford Street in Mayfair,[1] the second and oldest surviving son of The 9th Duke of Leeds and his wife, The Hon.

[3][4][5] He entered the British House of Commons, as Marquess of Carmarthen, in 1887, representing Brixton until December 1895, when he succeeded his father in his titles.

[3][6] In his first three years as Member of Parliament (MP), Lord Carmarthen was assistant secretary to The 1st Baron Knutsford.

[5] At the end of the nineteenth century, the Duke of Leeds was initiated into the fraternal society of the Ancient Order of Druids and was present in Stonehenge in August 1905 for the first massive ceremony organized by the A.O.D.