George Francis Alexander Seymour, 7th Marquess of Hertford (20 October 1871 – 16 February 1940) was a British aristocrat best remembered as a cross-dressing theatrical dancer, actor and ruthless fortune hunter.

He was the second child and eldest son of eight children born to Hugh Seymour, 6th Marquess of Hertford (1843–1912) and the Hon.

[5] His maternal grandparents were Alexander Hood, 1st Viscount Bridport, a British Army officer, and Lady Mary Penelope, the daughter of Arthur Hill, 3rd Marquess of Downshire.

[12] Under the stage name of ‘Mademoiselle Roze’ he performed a number of dances, including an imitation of Loie Fuller, in theatres in Hobart and Melbourne.

[13] He settled in Mackay, growing sugar cane and bananas, but quickly created great animosity, due to being a dishonest employer:[14] he was sued by a labourer (who won the case) for underpayment, and boasted tricking kanakas who purchased his chickens into thinking gold sovereigns were less valuable than silver half-crowns.

[12] He was noted for all-male house parties at his isolated residence 'The Rocks' near Mackay, and achieved notoriety for "skirt dancing" in a sequinned outfit with butterfly wings,[11] as one newspaper phrased it: "gyrating in the fluffy serpentine dance before a Kanaka audience... His legs being tough and skinny his audience show little inclination to pot him as long pig.