Hmmmm. Looks like there's more to learn about this song. This thread (click) says our own Vixen sings a version of "Come You Not from Newcastle" (see this site). This thread (click) mentions that Gwen Polwarth edited a songbook titled Come You Not From Newcastle (1972).
I take it the tune is the one titled "Newcastle" that may be found at the ABC Tunefinder - correct?
This link should give you the tune for "Cam'st thou not from Newcastle?" that Bruce Olson had on his Website as ABC.
-Joe-