Prince William attends mass during Malta independence festivity Prince William attended mass on Sunday in Malta's capital Valletta where he is taking part in celebrations to mark the 50th anniversary of the island's independence. Prince William replaced his wife Kate, who is still suffering from acute morning sickness, on the trip. Mass took place in St. John's Co-Cathedral where Prince William was also able to admire one of Carabaggio's most famous paintings, "The Beheading of Saint John the Baptist". IMAGES