Lord Breadalbane married Elizabeth Baillie ("Eliza") (born 29 June 1803, daughter of George Baillie and his wife Mary - daughter of
Sir James Pringle - and sister of
George Baillie-Hamilton, 10th Earl of Haddington) on 29 June 1821. They had no children. She was a
Lady of the Bedchamber to Queen Victoria from January to July 1839. She died in
Park Lane, London, on 28 August 1861, aged 58. Lord Breadalbane survived her by just over a year and died at
Lausanne,
Switzerland, on 8 November 1862, aged 66. On his death the barony of Breadalbane, earldom of Ormelie and marquessate of Breadalbane became extinct. He was succeeded in the lordship of Glenorchy, viscountcy of Tay and Paintland and earldom of Breadalbane and Holland by his distant relative and namesake, John Campbell. The marquessate was revived in favour of the latter's son in 1885. Lord Breadalbane's sister Mary Campbell married
Richard Temple-Nugent-Brydges-Chandos-Grenville, 2nd Duke of Buckingham and Chandos in 1819, with Richard inheriting the Dukedom in 1839. Breadalbane's and Mary's father the 1st Marquess was a trustee of a
marriage settlement made for the union at the time of the wedding. Included in the settlement, was an interest in the Hope Plantation in St. Andrew, Jamaica, which had come down from Anne the Duchess of Chandos, the wife of the 3rd Duke of Chandos from the previous century. In the aftermath of the
Slavery Abolition Act 1833 with the
Slave Compensation Act 1837, Mary's father-in-law, the 1st Duke of Buckingham and Chandos made a claim for compensation, "T71/865 St Andrew claim no. 114", comprising 379 slaves in
Jamaica. The claim was denied, as the ownership was determined to be part of the marriage settlement, but a £6,630 payment was awarded to the 1st Marquess of Breadalbane and Hon. George Neville Grenville as joint Trustees, at the time (worth £ in ). However, the papers note that the 1st Marquess had died in 1834, two years before the award was made, and so it is concluded that the 2nd Marquess was the awardee, though it is possible that the identity of the trustee was confused. However executed, the beneficiary of the payment was the 2nd Marquess' nephew, the 2nd Duke of Buckingham and Chandos, when the latter came into his inheritance. ==References==