Adalbert I (c. 820 – 886{{cite book , first=Chris , last=Wickham , year=1990 , title=Early Medieval Italy: Central Power and Local Society 400-1000 , publisher=University of Michigan Press , isbn=978-0-472-08099-1 , page=59 ) was the

Margrave of Tuscany The March of Tuscany (; Modern ) was a march of the Kingdom of Italy and the Holy Roman Empire during the Middle Ages. Located in northwestern central Italy, it bordered the Papal States to the south, the Ligurian Sea to the west and Lombardy to ...

from about 847 and the guardian of the island of

Corsica Corsica ( , , ; ; ) is an island in the Mediterranean Sea and one of the Regions of France, 18 regions of France. It is the List of islands in the Mediterranean#By area, fourth-largest island in the Mediterranean and lies southeast of the Metro ...

(''tutor Corsicae insulae'').

Biography

He was the son of Boniface II, Margrave of Tuscany, who had been despoiled of his fiefs by the Emperor

Lothair I Lothair I (9th. C. Frankish: ''Ludher'' and Medieval Latin: ''Lodharius''; Dutch and Medieval Latin: ''Lotharius''; German: ''Lothar''; French: ''Lothaire''; Italian: ''Lotario''; 795 – 29 September 855) was a 9th-century emperor of the ...

, and successor of his elder brother Aganus of Tuscany. The reign of Adalbert was long and successful. He took the side of Carloman,

King of Bavaria The King of Bavaria () was a title held by the hereditary Wittelsbach rulers of Bavaria in the state known as the Kingdom of Bavaria from 1805 until 1918, when the kingdom was abolished. It was the second time Bavaria was a kingdom, almost a t ...

, against

Charles the Bald Charles the Bald (; 13 June 823 – 6 October 877), also known as CharlesII, was a 9th-century king of West Francia (843–877), King of Italy (875–877) and emperor of the Carolingian Empire (875–877). After a series of civil wars during t ...

King of France France was ruled by monarchs from the establishment of the kingdom of West Francia in 843 until the end of the Second French Empire in 1870, with several interruptions. Classical French historiography usually regards Clovis I, king of the Fra ...

, in the struggle for the

Kingdom of Italy The Kingdom of Italy (, ) was a unitary state that existed from 17 March 1861, when Victor Emmanuel II of Kingdom of Sardinia, Sardinia was proclamation of the Kingdom of Italy, proclaimed King of Italy, until 10 June 1946, when the monarchy wa ...

, despite the latter being supported by the

pope The pope is the bishop of Rome and the Head of the Church#Catholic Church, visible head of the worldwide Catholic Church. He is also known as the supreme pontiff, Roman pontiff, or sovereign pontiff. From the 8th century until 1870, the po ...

. When the Roman court persisted in this "interference", Adalbert marched on the eternal city, forced John VIII to take refuge in the St Peter's Basilica, and forced the Roman citizens to swear fealty to Carloman. Excommunication by Pope John had little effect on him.{{Cite Newgenbio , title=Adalbert I , volume=1 , page=86 He married Rothild of Spoleto, daughter of Guy I of Spoleto{{sfn, Reuter, 1999, p=702 and sister of Lambert I and Guy III. He died in 884 or, more probably 886, and was succeeded by his son Adalbert II.

References

{{reflist

Sources

*{{cite book , title=The New Cambridge Medieval History , volume=3, C.900-c.1024 , publisher=Cambridge University Press , editor-first=Timothy , editor-last=Reuter , year=1999 {{s-start {{s-bef, before= Aganus {{s-ttl, title=

, years=847–886 {{s-aft, after= Adalbert II {{s-end {{Authority control {{DEFAULTSORT:Adalbert 01, Margrave of Tuscany 820s births Year of birth uncertain 886 deaths Adalbert 1 House of Boniface {{Italy-noble-stub