Arduinici

The Arduinici are a noble Frankish family that immigrates to Italy in the early tenth century, possibly from Neustria.

They are descended from and take their name after one Arduin (Harduoin).The first of the Arduinici to enter Italy is Roger, son of Arduin, who is established as count (comes) at Auriate in the early tenth century.

He extends his power and is succeeded by his son Arduin Glaber, named after his grandfather, who establishes the family as one of the most powerful in northwestern Italy.

He conquers the Susa Valley and allies with Provence against Fraxinetum.

He rules the counties of Auriate, Turin, Asti, Albenga and probably Bredulo, Alba, and Ventimiglia.

During a reorganization of the structure of Italy's marches under Berengar II in 950, Arduin's territories ware organized as the March of Turin, or marca Arduinica.Arduin allies his family with the House of Canossa by marrying his heir, Manfred I to Prangarda, daughter of Adalbert Atto of Canossa.

The family later draws itself close to the Holy Roman Empire.

Arduin's grandson, Ulric Manfred (Odalrich-Maginfred), is one of the most powerful noblemen of Italy in the 1020s, when he tries to play kingmaker and give the throne to William V of Aquitaine.

Ulric Manfred's daughters, Adelaide and Irmgard, marry high-ranking German princes: Hermann IV of Swabia and Otto III of Swabia, respectively.

Irmgard later marries Egbert I, Margrave of Meissen, one of the richest magnates in Germany, and Adelaide, through her marriage to Otto of Savoy, is the mother of Bertha, empress of Henry IV and of another Adelaide, who marries the German anti-king Rudolf of Rheinfeld.

Adelaide (died 1091) is the last scion of the house; her heirs are her sons Peter I and Amadeus II of Savoy.

The Arduinici possessions in Italy form the basis for Savoy power there and of the later Duchy of Savoy, Kingdom of Sardinia and Kingdom of Italy.

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