Juliet Cecil [nee McGrandle], wife of Rupert Lawrence Amherst Cecil, (b. 1967), gave birth to a son, Tate Benedict Leith, 3 May, 2006, a brother for Polly Candida, who was b. 18 February, 2004. Rupert Cecil is the elder son of the Hon. Mrs Patterson, (nee the Hon Fiona Corbett), of Newbury, Berkshire, and the late Mr David Cecil, & is a nephew of Henry Cecil, the racehorse trainer, scion of the Barons Amherst of Hackney (descended from the 3rd Marquess of Exeter); and is a grandson maternally of the 2nd Baron Rowallan.
Source:Daily Telegraph 8 May 2006