Notebook (1 March) states: “Each member of the College of Cardinals is given a titular church in the Eternal City, thus linking them to the Pope in his role as Bishop of Rome.” This, of course, is not quite exact. There are members of the College of Cardinals who have no titular church. There are the six cardinal bishops who instead are titular bishops of the suburbicarian ­dioceses. More importantly, there are at present four oriental patriarchs, heads of Eastern Churches in co