Passage: In 2003, Phillips met Autumn Kelly, a Canadian management consultant, at the Formula 1 Canadian Grand Prix in Montreal. Their engagement was announced on 28 July 2007.Autumn Kelly, who was raised in the Roman Catholic Church, was received into the Church of England before her marriage. If she had been Roman Catholic at the time of the marriage, Phillips would have lost his place in the line of the succession to the throne because of the terms of the Act of Settlement 1701. Shortly before their wedding, the couple caused some reported unease in royal circles when they were interviewed and photographed by Hello! magazine, and were reported to have been paid £500,000. They married on 17 May 2008 at St George's Chapel in Windsor Castle. The service was conducted by David Conner, the Dean of Windsor.

Question: In which castle were the royal couple married in 2008?
Windsor Castle