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,
Family of Catherine, Duchess of Cambridge Family of Catherine, Duchess of Cambridge Members of the Middleton family have been related to the British royal family by marriage since the wedding of Catherine Middleton and Prince William in April 2011, when she became the Duchess of Cambridge. By the early 19th century, the Middleton family was established in the West Riding of Yorkshire as cultural and civic figures, particularly in the legal profession. The law firm, "Messrs Middleton and Sons", was founded in Leeds by gentleman farmer and solicitor William Middleton Esq. of Gledhow Grange Estate. The family firm existed for over 150 years, closing in 1985.