Lisa Habgood, wife of the Hon. Adrian G.C. Habgood, gave birth to a son, Oliver William Chetwynd, 20 July, 2006, a half-brother for Thomas. Adrian is the younger son of the Right Rev the Baron Habgood (life peer) (b. 1927),who was 95th Archbishop of York (descended from the 4th Viscount Chetwynd), and Baroness Habgood (nee Rosalie Mary Anne Boston).
Source: The Times 25 July 2006