James Hay Erskine-Wemyss was born 29 August 1829 to James Erskine Wemyss (1789-1854) and Emma Hay (1809-1841) and died 29 March 1864 of unspecified causes. He married Millicent Anne Mary Erskine (1831-1895) 17 May 1855 in All Saints' Church, Knightsbridge, Greater London, England, United Kingdom.
|Offspring of James Hay Erskine-Wemyss and Millicent Anne Mary Erskine (1831-1895)|
|Dora Mina Erskine-Wemyss (1856-1894)||6 February 1856||24 December 1894||Henry George Grosvenor (1861-1914)|
|Mary Frances Erskine-Wemyss (1857-1894)|
|Randolph Gordon Erskine-Wemyss (1858-1908)|
|Hugo Erskine-Wemyss (1861-1933)|
|Rosslyn Erskine Erskine-Wemyss, 1st Baron Wester Wemyss (1864-1933)|