When John of Legnano died in Bologna on 16 February 1383, the University lost an esteemed professor and the city one of its best loved leaders. Born in Milan and educated at Bologna, Legnano became well known as a professor of canon law at the University and a man of wide learning, loyal both to the Church and to the city which adopted him. His writings were numerous, ranging from standard legal commentaries and tracts to treatises on theology, moral and political philosophy, astronomy, and optics. His broadest reputation, however, came from the authorship of De Fletu Ecclesiae (1378-1380), a series of arguments defending the validity of Urban VI's election at the outbreak of the Great Western Schism. Through this work he became the chief spokesman for the Italian Pope on a politicalecclesiastical question which concerned every state in Europe.