Found in articles
Gregori III de Túsculum
Túsculum que el va succeir. És considerat l'ancestre de la família Família Colonna. «Kingdoms of Italy - Consuls and Senators». [Consulta: 29 abril 2021].
originally part of the Abruzzo Ultra Department of the Kingdom of the Two Sicilies, but was annexed to the Abruzzi Region of the Kingdom of Italy in 1861, and
(en italià). Editori Laterza, 2014-11-01. ISBN 978-88-581-1730-9. «Kingdom of Italy (WW2)» (en anglès americà). Tank Encyclopedia, 27-10-2023. [Consulta:
of the Career of the Normans in Italy — Legend and History." Speculum, Vol.23, No.3 (Jul 1948), pp 353-396. Bachrach, Bernard S. "On the Origins of William
Capecchi, Danilo; Ruta, Giuseppe. Strength of Materials and Theory of Elasticity in 19th Century Italy (en (anglès)). Springer, 2015. ISBN 978-3-319-05523-7