Page 365. " comparing it to the marriage of Grace Kelly, the movie star, and that prince in Europe "

Grace Kelly was a movie star. She met Prince Rainier III Monaco during a photo session at the Palace of Monaco. Within just three days of meeting Grace Kelly's family, Rainier proposed. Grace's family gave Rainier a dowry of $2,000,000 for the wedding preparations to continue on. The wedding was set for April 19, 1956. It was referred to as the wedding of the century.

Wikipedia: Grace Kelly