Boniface I, Marquess of Montferrat the independent city communes of the Lombard League. Boniface's eldest brother, William, had died in 1177, soon after marrying Sibylla, the heiress presumptive to the Kingdom of Jerusalem. In 1179, the Byzantine emperor Manuel I Comnenus offered his daughter Maria Porphyrogenita as a bride to one of the sons of William V. Since Boniface, like his older brother Conrad, was already married, and Frederick was a priest, the youngest brother, Renier, married her instead, only to be murdered along with her during the usurpation of Andronicus. In 1183, Boniface's nephew Baldwin V was crowned co-king of Jerusalem. William V went
Baldwin of Forde heir, Prince Richard, who had rebelled against his father. After Henry's death, Richard sought and obtained absolution for the sin of disobedience to his father from both Baldwin and Walter de Coutances, Archbishop of Rouen. Baldwin, along with Coutances, was with Richard on 20 July 1189 at Rouen when the king was invested with the Duchy of Normandy. Baldwin crowned Richard at Westminster Abbey on 13 September 1189 in the first English coronation for which a detailed description survives. After the death of Henry II, and the accession of Richard as king, the monks of Christ Church Priory petitioned Richard