PATSPEN3 added to group - it may have been added to the DT after the group was put was put together

I have the following recordings of Sir Patrick Spens:
Martin Carthy    Child                            Free Reed
Bob Coltman       Son of Child (his version)       Minstrel
Michael Cooney    Still Cooney...                  Front Hall (vinyl)
Jock Duncan       Tae the Greenwood Gaen          Sleepytown
Jock Duncan       Bound to be a Row                Autumn Harvest
John Langstaff    Sings Amer. & British Folksongs Tradition (vinyl)
Rick & Lorraine Lee Living in the Trees          Folk Legacy
Ewan MacColl      Long Harvest Vol 7               CAMSCO
Ewan MacColl      Blood & Roses 4                  Blackthorn/CAMSCO
Ewan MacColl      Child Ballads 1                  
Hermes Nye       Early English Ballads            Folkways
Jean Redpath      Father Adam                      Philo
Wendy Weatherby   A Shirt of Silk or Snow          Fellside