On a winter evening in England, a lady and her son were driving as it began to snow.  As it became heavy, the lady couldn’t see, and she wound up in a ditch.  The mother and son went and found a country home.
The lady of the house invited her in, and cared for her bringing hot tea and food.  Later, the owner of the home discovered she had helped the Queen of England and her son, the heir to the throne.  So, Christmas is a remembrance of a King who visited.