1024 On death of Henry II, Heribert invites Conrad II of Germany to Italy and gives him the iron crown of Lombardy (1026).
1026 The Venetians expel their doge Ottone Orseolo, but recall him in 1031. The people of Lodi resent Heribert’s appointing their bishop, and a war ensues in which Heribert is successful.
1036 Battle of Campo Malo, between Heribert and the opponent factions. Heribert summons the emperor to his aid, but the latter, offended at the independence of the Milanese, retires to Pavia.
1037 At Diet of Roncaglia Conrad enacts decree that all fiefs shall be hereditary. This is to check the power of the ecclesiastical lords. Siege of Milan by Conrad, who has to retire on account of pestilence.
1039 Siege of Milan raised at death of Conrad. Heribert devises the carroccio.
1041 The people of Milan, headed by Lanzo, drive the nobles out of Milan.
1044 Peace restored in Milan.
1045 Death of Heribert.
1048-1055 During the pontificate of Leo IX, attempts to enforce celibacy of clergy are vigorously resisted in Milan.