Charles Cornwallis, 1st Marquess Cornwallis | Saint Boniface | Robert Gascoyne-Cecil, 3rd Marquess of Salisbury | Marquess | Montferrat | Francis Rawdon-Hastings, 1st Marquess of Hastings | Richard Wellesley, 1st Marquess Wellesley | Marquess of Bute | Wills Hill, 1st Marquess of Downshire | James Broun-Ramsay, 1st Marquess of Dalhousie | David Cecil, 6th Marquess of Exeter | Robert Grosvenor, 1st Marquess of Westminster | Henry Paget, 1st Marquess of Anglesey | Frederick Hervey, 8th Marquess of Bristol | Frederick Hamilton-Temple-Blackwood, 1st Marquess of Dufferin and Ava | Victor Hervey, 6th Marquess of Bristol | Robert Wynn Carrington, 1st Marquess of Lincolnshire | Marquess of Rockingham | Marquess of Lansdowne | marquess | John Neville, 1st Marquess of Montagu | Freeman Freeman-Thomas, 1st Marquess of Willingdon | Pope Boniface VIII | Paul Marquess | Marquess of Milford Haven | Marquess of Anglesey | Marquess of Ailsa | John Hamilton-Gordon, 1st Marquess of Aberdeen and Temair | William Parr, 1st Marquess of Northampton | Victor Hope, 2nd Marquess of Linlithgow |
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.
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.