Complex sentence: Viterbo was placed under interdict for the imprisonment of the cardinals and Rome was not at all inclined to accept a hated Frenchman as Pope, so Martin IV was crowned instead at Orvieto on 23 March 1281.
Split into simpler sentences: Viterbo was placed under interdict for the imprisonment of the cardinals. But Rome was not at all inclined to accept a hated Frenchman as Pope, so Martin IV was crowned instead at Orvieto on 23 March 1281.