Can't believe I missed this thread on it's previous iterations, but still, here's my Euro 0.02 worth!

"Old Man" by Randy Newman, recorded by Art Garfunkel among others. It's about a younger man bidding farewell to a dying older man, perhaps his father. Very sad, but a brilliant song.

"Home from the Forest" by Gordon Lightfoot, which I have always reckoned to be the equal of "Streets of London".

"Josephine, for better or for worse" by Dave Cousins of the Strawbs may not be another "Chanson des vieux amants", but handles the same sentiments more simply.

"Bronco Bill's Lament" by Don McLean fits the category.

I don't believe any of the above are in the DT, if anyone's interested, I could remedy this.