in 1716. [ 17 ] Officers of the Order of the Garter (left to right): Secretary (barely visible), Gentleman Usher of the Black Rod, Garter Principal King of Arms, Register, Prelate, Chancellor. The Order has six officers: the Prelate, the Chancellor, the Register, the Garter Principal King of Arms , the Usher, and the Secretary. [ 18 ] The offices of Prelate, Register, and Usher were created on the order's establishment; those of Garter Principal King of Arms and Chancellor, in the 15th century; and that of Secretary, in the 20th century. [ 19 ] The office of Chancellor is now held by one of the companions of the order. For most of its existence, the Bishop of Salisbury has held the office, although laymen held it from 1553 to 1671. In 1837, after boundary changes made Windsor Castle fall in the diocese of Oxford, the Chancellorship was transferred to the Bishop of Oxford . A century later, the Bishop of Salisbury challenged this transfer, on the grounds that the Chancellorship had been attached to his office regardless of the diocese in which the chapel of the order lay; and that, in any event, St George's Chapel , as a Royal Peculiar , was not under diocesan jurisdiction. The office of Chancellor was removed from the Bishop of Oxford (the outgoing bishop, Thomas Banks Strong , had been outspoken in the abdication crisis of Edward VIII ), and so it was withheld from his successor, Kenneth Kirk , and has