Julius Soubise was the son of a Jamaican slave from St. Kitts in the Caribbean, who was brought to England in the 1760s by Captain Stair Douglas. At ten years old, Soubise was given to the Duchess of Queensbury who treated the child like her own son. She and her husband Charles dressed and educated young Julius, teaching him how to fence and ride horses. Soubise was popular among the rich and successful of Queensbury.
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