In 1275[REF] Fitzwalter's grandson, also called Robert, was given licence to sell Baynard's Castle to Robert Kilwardby, the Archbishop of Canterbury for the precinct of the great Dominican Priory at Blackfriars that started construction in 1276 [REF].
The Bishop of London had first pick of the stones for the 'New Work' (1256-1314) reconstructing Old St Paul's Cathedral.