Hi, Dave - the tune used for "Ilkley Moor" is CRANBROOK. The oldest lyrics to the tune are Grace, 'Tis a Charming Sound. That's the one that's no longer used since the advent of "Ilkley Moor." "While Shepherds Watched" is still sung to CRANBROOK. I'm surprised that CRANBOOK is not used in any of the hymns in The English Hymnal

-Joe-