Good King Wenceslas

"Good King Wenceslas" was a popular Christmas carol about a king who goes out to give alms to a poor peasant on the Feast of Stephen (the second day of Christmas, December 26).

Mentions

 * While treading carefully through the minefields of Skaro, Sarah Jane Smith mentioned Good King Wenceslas to the Doctor and Harry Sullivan. (DW: Genesis of the Daleks)
 * Bayldon Copper described Humans as worshipping Good King Wenceslas. (DW: Voyage of the Damned)