The next monument eastward of the Black Prince's is Archbishop Courtenay's (1396); and beyond this a mean brick mound without inscription but not without a history. Here lies Odet de Coligny, brother of the great admiral. Though a prince, a cardinal, an inquisitor, and a bishop, his sympathies were with the Huguenots, and he undertook a mission on their behalf to Queen Elizabeth. In the canonical house, formerly known as Master Omer's, at the southeast corner of the Precincts, he was poisoned by his servants, whether or not by foreign instigation is not known. Those were days when the murderer's hand reached far and freely, especially in causes political and religious. He was laid here and rudely bricked over, in expectation of his removal to France; but the French wars of religion left men no leisure to care for their dead. Against the south wall is a tomb without inscription and long unidentified. When opened in 1889 there was found, in full pomp of episcopal vestments, pastoral staff, chalice and paten, wearing a ring graven with strange Egyptian symbols, Hubert Walter, acclaimed archbishop on the field of Acre and afterwards the faithful chancellor who kept the kingdom and raised the ransom for Coeur de Lion. Beside him was a collecting box, perhaps for Peter's Pence, or for the King's ransom. These relics are kept under glass in Henry IV's chantry. East of Trinity Chapel is the circular space called the Corona, or Becket's Crown, either as the head or crown of Becket's church, or, as Dr. Cox thinks, because here by the altar to the Trinity was a silver bust of Becket containing the fragment of his skull cut off by Richard the Breton's sword. The three most famous objects in the Cathedral are the site of the shrine, the Black Prince's monument, and the chair of St. Augustine; and here is the last of the three. In this seat of Purbeck or Bethersden marble have been enthroned from time immemorial the Archbishops of Canterbury. If some critics say that it is no older than the thirteenth century, others say that it was in existence in the sixth century, when Augustine arrived, and that Kentish kings were crowned on it. It has always a place in the triple enthronement of an Archbishop of Canterbury. He is seated on the throne in the choir as Diocesan Bishop, in the chapter house as titular Abbot, and in St. Augustine's chair as Primate of All England.