"Grace Darling" was recorded at Charterhouse School, and features its organ.
The song was re-recorded with French lyrics as "Cherie Je T'Aime", principally to please the Strawbs' French Canadian fans and backed with instrumental "Heroine" (aka "Heroine's Theme")(see "Cherie Je T'Aime" page).
Canadian ("Cherie Je T'Aime") promo release
This was the re-recorded French version of "Grace Darling" produced for the French Canadian market by A&M Canada. Thanks to Marc Moreau for the promo and the info.
The French lyrics are included in Dave Cousins' poetry collection "The Bruising Of Hearts, The Losing Of Races".
Canadian full release
Thanks to Pierre Alexander Tremblay for images of the full release, which seems impossibly rare - only ever heard of this one copy.