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Padre de Margrave Oberto I Obizzo, count of Luni and Ambroso, bishop of Aléria in Corsica
https://it.wikipedia.org/wiki/Adalberto_il_Margravio (10th century 951?)
-http://www.imalaspina.com/en/history-of-the-malaspinas.html - ... ... Lamberto, Guido's other brother, followed him as marquess of Tuscany and count of Lucca. On April 13, 945, a sentence appointed Oberto, Lamberto's descendant, duke of Spoleta, marquess of Milan, count of Luni and count Palatine...
-http://fmg.ac/Projects/MedLands/NORTHERN%20ITALY%20900-1100.htm#_ft...
1. ADALBERTO [I] . Marchese in the March of Milano. m ---. The name of Adalberto's wife is not known. Adalberto & his wife had one child:
a) OBERTO OBIZZO [I] (-before 975). ... ....
Chronological scheme of events
Adalbert II "the Rich", margrave of Tuscany
Guy "the Philosopher", margrave of Tuscany die and the power pass to his BRO, but the widow Marozia marries Hugues I d'Arles that deposes & blinds to take power (given to relatives)
Lambert, margrave of Tuscany (blinded & deposed by Hugues)
Adalberto III, the Margrave
Margrave Oberto I Obizzo, count of Luni (a sentence gives him back part of his grandfather's power, we know for sure son of Adalberto)