Jim - I can't help directly but it might be worth contacting Strawhead. Garstang Morris comprised members of Strawhead, Alan Bond and other luminaries of the English folk scene, were revived for the 1992 Preston Guilds, for which the Lamb and Flag show was also composed and (in the Strawhead contingent) included Gregg Butler who sings Nell Flaherty's Drake on which another thread is currently running.... but Gregg has done loads of research on local songs. If no-one local (I'm from south of Watford) chips in, PM me and I'll send you contact details.

Kitty