 On 8 April 1167, the leaders of Pisa, who were loyal to the Emperor, chose a Canon of the cathedral, Benencasa, and he and the Pisans travelled to Viterbo, where the antipope ordained him a priest on Holy Saturday and consecrated him a bishop on Easter Monday.They returned to Pisa on 23 May 1167.In the spring of 1408, Pisa became directly involved in the struggles of the Western Schism, which had been tormenting Christendom for thirty years.