Conversation so far:
Who is the story, Good King Wenceslas, based on?
The legend of the Good King Wenceslas is based on the life of the historical Saint Wenceslaus I, Duke of Bohemia
When was the Good King Wenceslas legend created?
Saint Wenceslas I, Duke of Bohemia was considered a martyr and a saint immediately after his death in the 10th century.
What did Good King Wenceslas do?
Good King Wenceslas walked barefoot at night to give alms to widows, orphans, prisoners, etc. at churches.

Question: where did this king live?
Self-contained rewrite: where did Good King Wenceslas live?