I learned this tune at a workshop given by two Welsh musicians, Mike Lease and Jane Ridout. They called it "Farewell Marian", as if Marian was a person. The accent is on the AN in Marian.

But what the title means is not that important. What is important is the beauty of the melody, which starts in Dm harmonic, moves to F, then returns to Dm harmonic. It is one of my favorite waltzes.