Not sure when ... the Countess of Mornington is expecting her third child. The 39 year-old Jemma Kidd is married to the Earl of Mornington, eldest son the Marquess and Marchioness of Douro.
Lord Douro is the heir apparent to the Duke of Wellington, who celebrated his 99th birthday. Lady Douro was born Princess Antonia of Prussia.
Lord and Lady Mornington are the parents of a set of twins, Arthur, who bears the courtesy title, Viscount Wellesley, and Lady Mae Wellesley, born in January 2010.