Jaquintus is the prince (excellentissimus princeps) of…

Jaquintus is the prince (excellentissimus princeps) of Bari from the death of Tancred, the son of Roger II of Sicily, in 1138.

Bari, where during the wars of the past year fifty thousand inhabitants had remained unscathed behind the massive walls, decides in 1139, to surrender after two months of siege: Jaquintus, for reasons, unknown had rebelled against the king and brought down the royal wrath upon his oft-forgiven city.

Jaquintus signs a surrender in which there is no pillage and prisoners are exchanged.

However, a man of Roger is freed from prison and claims to have had one eye put out.

Roger summons jurists from Troia and Trani to pronounce the treaty null.

Once done, Jaquintus and ten of his leading men, perhaps more, are hanged.

Thus ends the principality of Bari and the city's rebelliousness seems quashed.

Roger’s execution of the prince and his counselors is perhaps the most violent act of his life.