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John Rawdon, 1st Earl of Moira (17 March 1720 – 20 June 1793), known as Sir John Rawdon, Bt, between 1724 and 1750 and as The Lord Rawdon between 1750 and 1762, was an Irish peer.
Lord Moira married, firstly, Helena Perceval, daughter of John Perceval, 1st Earl of Egmont and Lady Catherine Parker, on 10 November 1741. They had two children:
- Lady Helena Rawdon, married Stephen Moore, 1st Earl Mountcashell and had issue.
- Lady Catherine Rawdon, married Joseph Henry.
After her death in June 1746 he married, secondly, Anne Hill, daughter of Trevor Hill, 1st Viscount Hillsborough and Mary Rowe, on 23 December 1746. They had no children. After her death in August 1751 he married, thirdly, Elizabeth Hastings, 16th Baroness Botreaux, daughter of Theophilus Hastings, 9th Earl of Huntingdon and Lady Selina Shirley, on 26 February 1752. They were cousins, her grandmother Mary Levinge being his aunt. They had five children:
- Lady Selina Frances Rawdon (d. 1827), married George Forbes, 6th Earl of Granard and had issue.
- Lady Charlotte Adelaide Constantia Rawdon (d. 1834), married Hamilton Fitzgerald. In 1800, the royal House of Bourbon being in exile from France, Lady Charlotte's hand was sought in marriage by one of that dynasty's cadet princes, Antoine Philippe d'Orléans, Duc de Montpensier, but he was refused authorisation by Louis, Count of Provence (the future King Louis XVIII), and the marriage did not occur.
- Lady Anne Elizabeth Rawdon (1753–1813), married Thomas Brudenell-Bruce, 1st Earl of Ailesbury without issue.
- Francis Rawdon-Hastings, 1st Marquess of Hastings (1754–1826)
- Hon. John Theophilus Rawdon (1756–1808), father of Elizabeth, Lady William Russell
Lord Moira died in June 1793, aged 73, and was succeeded by his eldest son by his third marriage, Francis, who had already been created Baron Rawdon in his own right in 1783 and was created Marquess of Hastings in 1816. The Countess of Moira died in April 1808.