William the Conqueror
When, however, the time came for the performance of the first of these ceremonies, and all the great chieftains and potentates of the respective armies were assembled to witness it, Rollo, it was found, would not submit to what the customs of the French monarchy required. He ought to kneel before the king, and put his hands, clasped together, between the king's hands, in token of submission, and then to kiss his foot, which was covered with an elegantly fashioned slipper on such occasions. Rollo would do all except the last; but that, no remonstrances, urgencies, or persuasions would induce him to consent to.
And yet it was not a very unusual sign or token of political subordination to sovereign power in those days. The pope had exacted it even of an emperor a hundred years before; and it is continued by that dignitary to the present day, on certain state occasions; though in the case of the pope, there is embroidered on the slipper which the kneeling suppliant kisses, a