Roman Catholics and leaders of the 16 Commonwealth countries where Queen Elizabeth II serves as head of state have welcomed an announcement by U.K. Prime Minister David Cameron about changes to the royal succession that include allowing the monarch to marry a Roman Catholic.

“Attitudes have changed fundamentally over the centuries and some of the outdated rules … just don’t make sense to any of us any more,” Cameron told reporters on Oct. 28 at the 2011 Commonwealth Heads of Government meeting in Perth, Australia.