I recently had some gracious correspondence from Peggy Seeger - I'm hoping to record one of Ewan McColl's unpublished songs (see "Girls of Dublin City" in DT). She's very much alive and kicking, with lots of projects on the go. Hopes to publish "The Complete Ewan McColl Songbook" next year!
Incidentally, she tells me that McColl called the song "Ten Young Women and One Young Man"! I'm not sure how I ended up with the other title!