As we saw in Part I, Archbishop Viganò’s current position hinges on the belief that Francis’s legitimacy is highly (if not certainly) doubtful, but is that really the case? Not according to the doctrine known as peaceful and universal acceptance, which the renowned Jesuit canonists Fr. Francis X. Wernz (1842-1914) and Fr. Peter Vidal (1867-1938) qualify as “a sign and an infallible effect of a…