March of Tuscany

The March (or margraviate) of Tuscany or Tuscia was a frontier march in central Italy, bordering the Papal States to the south and east, the Ligurian Sea to the west, and the rest of the Kingdom of Italy to the north. It was a Carolingian creation, a successor of the Lombard Duchy of Tuscia. The march itself comprised a collection of counties, largely in the valley of the Arno, centred around the County of Lucca, which was sometimes called a duchy.

The first Tuscan margrave was Adalbert I, who was granted that title in 846. Before him, his father and grandfather, Boniface I and Boniface II, had controlled most of the counties of the region and had held higher titles as well, such as prefect of Corsica or duke of Lucca. The Bonifacii held the march until 931. During the late ninth and early tenth century, the support of the margraves of Tuscany was instrumental for any candidate intent on becoming King of Italy.

In 931, Hugh of Arles, who had made himself King of Italy, dispossessed the Bonifacii in an attempt to consolidate all the important fiefs of Italy in his relatives' hands. He granted Tuscany to his brother Boso. It remained in the hands of members of the family known as the Bosonids down to 1001. It also retained its influence regarding royal elections. As late as 1027, Rainier was deposed from the march by Conrad II for opposing him as king.

In 1027, the duchy was granted to the House of Canossa. Boniface III used the title dux et marchio: duke and margrave. He was an...
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