During the 1860's Henry Edward Manning, who had recently converted to Roman Catholicism, advanced a polemical rationale for the doctrine of papal infallibility and justified the Roman pontiff's right to address contemporary political, economic, and social issues.
von Arx, Jeffrey P., "MANNING'S ULTRAMONTANISM AND THE CATHOLIC CHURCH IN BRITISH POLITICS" (1989). History Faculty Publications. 33.
von Arx S.J., Jeffrey P. "MANNING'S ULTRAMONTANISM AND THE CATHOLIC CHURCH IN BRITISH POLITICS". Recusant History; May1989, Vol. 19 Issue 3, p332-347, 16p