However, Boniface's main sights were set not on the Piedmont but on nearby Alessandria: from 1227, when he strengthened an alliance with Asti, he continued until his death to fight the Alessandrini.
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On 4 May 1253, Conrad invested him with Casale and on 12 May he was dead at Moncalvo, only a few hours after dictating his testament.
Before him, his father and grandfather, Count Boniface I of Lucca and Boniface II, probably of Bavarian origin, had controlled most of the counties of the region and had held higher titles as well, such as a Prefect of Corsica or a Duke of Lucca.
Saint Boniface | Pope Boniface VIII | Pope Boniface IX | Boniface I, Margrave of Tuscany | Boniface II | Saint-Boniface, Quebec | Boniface II, Margrave of Tuscany | Symona Boniface | St Boniface's college | St Boniface's Church, Bunbury | St. Boniface's Abbey, Munich | St. Boniface's Abbey | Saint Boniface (electoral district) | Denise, Dativa, Leontia, Tertius, Emilianus, Boniface, Majoricus, and Servus | Boniface Simutowe | Boniface I of Challant | Boniface III, Margrave of Tuscany | Boniface, Count of Bologna | Boniface | ''Aglaida and Boniface'' (painting by Alexandre Cabanel |
His first official act was to burn, in the presence of the assembled clergy, the anathema which Boniface II had pronounced against the latter's deceased rival Dioscurus on a false charge of simony and had ordered to be preserved in the Roman archives.