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In page Juliana Osborne, Duchess of Leeds:

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On 9 April 1725 she married Peregrine Osborne, styled Marquess of Carmarthen, the future duke at St Anne's Church, Soho.[1] He was the second son, but eldest surviving, of Peregrine Osborne, 2nd Duke of Leeds, and the former Bridget Hyde. Osborne's second wife, the former Lady Anne Seymour (a daughter of Charles Seymour, 6th Duke of Somerset), had died in 1722. There were no children from her marriage to the duke, who already had a son and heir from his first marriage, to Lady Elizabeth Harley (a daughter of Robert Harley, 1st Earl of Oxford and Earl Mortimer). He inherited the dukedom from his father in 1729.[citation needed]