Still trying to identify song I ran into in High School about a ruined castle.

The song talks about how these castle walls once held light and joy, but are now silent. Lovers no longer drink from these cups; knights no longer wield these rusty swords and shields; the halls are empty; the lamps no longer burn, and so on.

Three verses total, of eight lines apiece (or you could say six verses to alternating tunes.)

(DAH da DAH da DAH da DAH,
DAH da DAH da DAH"

Since I ran into at least two full sets of lyrics on the subject, to the same tune, I tended to assume it was either a translation or an instrumental piece that somebody was grafting words onto.

This can't be a TOTAL unknown, since we had it in a songbook along with "Beautiful Dreamer" and "My Darling Clementine..." But I can't find anything like it in the database, and my first query here died young. Anyone remember this?