MERRY WIVES OF WINDSOR: Prince William's hotly tipped engagement to Kate Middleton might have hit a snag, but that hasn't stopped other royal nuptials from rolling ahead. Peter Phillips, Queen Elizabeth II's eldest grandson — and the son of Princess Anne and Captain Mark Phillips — is set to tie the knot with his Canadian girlfriend, Autumn Kelly. However, a spokesman for Buckingham Palace said a wedding date had not yet been set. It's unlikely the ceremony will be a full-blown royal jamboree: The 29-year-old Phillips may be 10th in line to the throne, but he has no title, and undertakes no royal duties. Indeed, he and Kelly are rarely even seen on the London social circuit. And speaking of jamborees, Buckingham Palace is celebrating the 60-year anniversary of the Queen and Prince Philip with a small exhibition of wedding gifts, fabulous diamond jewelry and — of course — the dress and 13-foot bridal veil designed by Norman Hartnell. The exhibition, "A Royal Wedding: 20 November 1947," includes such curios as a piece of lace hand-spun by Mahatma Gandhi for the royal couple; porcelain chocolate pots from Pope Pius XII, and a Singer sewing machine from the provost and council of the town of Clydebank, Scotland.