Prince Louis of Cambridge Prince Louis of Cambridge Prince Louis of Cambridge (Louis Arthur Charles; ; born 23 April 2018) is a member of the British royal family. He is the third and youngest child and second son of Prince William, Duke of Cambridge, and Catherine, Duchess of Cambridge. He is fifth in the line of succession to the British throne. Kensington Palace announced on 4 September 2017 that the Duke and Duchess of Cambridge were expecting their third child. A son was born at 11:01 BST (10:01 UTC) on 23 April 2018. He was first seen in public seven hours after his birth,
Catherine, Duchess of Cambridge Martineau Lupton (1848–1921), whose first cousin Sir Thomas Martineau was the uncle of World War II Prime Minister Neville Chamberlain. The Duchess's maternal ancestors, the Harrisons, were working-class labourers and miners from Sunderland and County Durham. Ancestors through her maternal line include Sir Thomas Conyers, 9th Baronet (1731–1810), who was a descendant of King Edward IV through his illegitimate daughter Elizabeth Plantagenet. Other ancestors are Sir Thomas Fairfax (1475–1520) and his wife Anne Gascoigne, who was a descendant of King Edward III. Catherine, Duchess of Cambridge Catherine, Duchess of Cambridge (born Catherine Elizabeth Middleton; 9 January 1982), is a member