Q,
I'm interested in this stuff but I'm not quite clear on the direction of the discussion.

You mention first that there was a ship called Margaret Evans--fact.

Then you say "The chantey "Clear the Track" is associated in songs about her." Yes, she is mentioned in some versions collected of that chantey -- I believe by Terry and Sharp, who covered similar ground. But the various other versions collected suggest that one inserted whatever vessel's name he/she wished (see Hugill's original text for a run down of variations).

Then you give some good historical references to the use of "bulgine/bullgine".

So are you seeking other songs that mention the Margaret Evans (what makes you think there are any?), or seeking to discuss some aspect of "Clear the Track"?

Gibb