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Adalbert I of Tuscany

9th Century Margrave of Tuscany

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionJul 22, 2026
Entity authorityQ347440 ↗
Source-derived summary

Adalbert I (c. 820 – 886) was the margrave of Tuscany from about 847 and the guardian of the island of Corsica (tutor Corsicae insulae).

Biography

He was the son of Boniface II of Tuscany, who had been despoiled of his fiefs by the Emperor Lothair I, and successor of his elder brother Aganus. The reign of Adalbert was long and successful.

He took the side of King Carloman of Bavaria against King Charles the Bald of France in the struggle for the Kingdom of Italy, despite the latter being supported by the pope. When the Roman court persisted in this "interference", Adalbert marched on Rome, 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.

He married Rothild, daughter of Guy I of Spoleto.

He died in 884 or, more probably 886, and was succeeded by his son Adalbert II.

References

Sources

Reuter, Timothy, ed. (1999).

Editorial summary

“Adalbert I of Tuscany” enters the record as 9th Century Margrave of Tuscany. Crown Archives preserves that source wording while asking what Adalbert, Tuscany and Century can confirm, complicate or overturn.

Editorial reviewA dependable orientation record for establishing vocabulary, names and a first evidence trail. The current lead gives the account dated anchors—1999—that can be checked directly. The linked authority record independently contributes the date 0820. Its strongest next move is a source search built around Adalbert, Tuscany and Century.
Editorial analysis

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“Adalbert I of Tuscany” is worth following because a concise public description often conceals a longer documentary argument. Here, Adalbert, Tuscany and Century provides the most credible route into that argument.

Evidence profile

The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Jul 22, 2026. The linked authority identifier is Q347440. 1 of 1 selected statements include explicit references; 1 carry qualifiers and 0 use preferred rank. The first chronological checks are 1999.

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This entry incorporates text from “Adalbert I of Tuscany” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.