List of Knights Grand Cross of the Order of the Bath  This is an "incomplete" list of those who were made Knights/Dames Grand Cross of the Order of the Bath from the date of the Order's structural change by the Prince Regent on behalf of his father, King George III, on 2 January 1815. Knights/Dames Grand Cross use the post-nominal GCB. Those Knights living at the time of the reorganisation of the Order automatically became Knights Grand Cross, with the post-nominal GCB.