of William Douglas-Hamilton, Duke of Hamilton, and Anne Hamilton, suo jure Duchess of Hamilton (eldest daughter and co-heiress of James Hamilton, 1st Duke of Hamilton). Lord John Hay (d. 1706), who commanded the famous regiment of dragoons, afterwards called the Scots Greys, at the Battle of Ramillies; he married Lady Elizabeth Dalzell, only child of James Dalzell, 3rd Earl of Carnwath, and, after her death, Elizabeth Orby, a daughter of Sir Thomas Orby, Bt. Lord William Hay (d. 1723) of Newhall, a Brig.-Gen. who married his cousin Margaret Hay, only child of John Hay (eldest son and heir apparent of Sir James Hay, 1st Baronet of Linplum) and Jean Foulis (daughter of Sir John Foulis, 1st Baronet of Ravelstoun). Lady Anne Hay, who married, as his third wife, William Ross, 12th Lord Ross. Lady Jean Hay (d. 1731), who married John Hamilton-Leslie, 9th Earl of Rothes, in 1697. Lord Tweeddale died on 20 April 1713. He was succeeded in his titles by his eldest son, Charles. References External links 1645 births 1713 deaths Scottish representative peers Lords High Commissioner to the Parliament of Scotland Fellows of the Royal Society Members of the Parliament of Scotland 1689–1702 Members of the Parliament of Scotland 1702–1707 Commissioners of the Treasury of Scotland Tweeddale 2