St John FisherHere's a very helpful address from William Cardinal Levada on ecumenical initiatives from Rome to Anglicans:

The recent Apostolic Constitution Anglicanorum coetibus, establishing—I don’t need to translate this, I suppose, it won’t come out so well in translation: “groups of Anglicans”—establishing personal ordinariates for groups of Anglicans seeking full communion with the Catholic Church, was not created in a vacuum. For many Anglicans, the possibility opened by this initiative has seemed to be a logical development of the official dialogues between the Anglican Communion and the Roman Catholic Church during the 45 year period since the end of the Second Vatican Council. Any discussion of Pope Benedict’s initiatives regarding Anglicans might therefore begin with a glance at this important history...

Here's the whole thing.