IACOPO di PORTA RAVEGNANA. - Bolognese jurist, born in an uncertain year, already holding a chair before 1140, died in Bologna on 11 Oct. 1178.
He was one of the four doctors, immediate disciples of Irnerio, who, summoned by Barbarossa, took part at Roncaglia in 1158 in defining the imperial regalia: of all of them, the least known, since only a certain number of glosses survive from him (signed I., Ie., Iac., Iaco.), to which perhaps some writings of disputed attribution should be added, including a Tractatus criminum; but perhaps the most esteemed by his contemporaries, if the leg-
end could arise (interpolated into the chronicle of Ottone Morena) according to which the dying Irnerio, choosing him among the four as his successor, would have bestowed high praise upon him in the famous distich:
Bulgarus os aureum, Martinus copia legum,
mens legum est Ugo, Jacopus id quod ego.