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“Attitudes have changed fundamentally over the centuries and some of the outdated rules … just don’t make sense to any of us any more,” Cameron told reporters on Oct. 28 at the 2011 Commonwealth Heads of Government meeting in Perth,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

Anglicans from the diocese of Qu’Appelle and Roman Catholics from the archdiocese of Regina celebrated Pentecost Sunday together at Holy Rosary Cathedral in Regina. The joint service was the result of the covenant between the two dioceses, signed in January 2011. The two dioceses occupy roughly the same geographic area in southern Saskatchewan.

The covenant was signed by Anglican Bishop Gregory Kerr-Wilson and Roman Catholic Archbishop Daniel Bohan. The agreement commits the dioceses to specific initiatives. These include annual shared services with the two bishops, keeping and upholding each church and its leaders in prayer, working together on various issues, and jointly working with First Nations elders to promote reconciliation and healing. The bishops commit to maintaining communications, especially when new developments in one church may present challenges for the other. Anglican and Roman Catholic parishes are encouraged to undertake joint activities in worship, mission, education and social justice.

Last month, the national Canadian ARC Bishops’ Dialogue celebrated 40 years of bringing Anglican and Roman Catholics closer together. “The Canadian Anglican-Roman Catholic dialogue is one of the longest running in the world,” says Bishop Michael Ingham of the Anglican diocese of New Westminster in Vancouver.

Unity headed the agenda as five Roman Catholic and four Anglican bishops (one was absent due to illness) met over three days in Pickering, Ont., to discuss–among other things–Growing Together in Unity and Mission, a document produced by the International Anglican-Roman Catholic Commission for Unity and Mission.