Nic Jones commented on his album notes (Nic Jones 1971) re the track 'Edward':

"This is more or less a version of a large group of songs under the various titles of Edward, Lizzie Wan, Lucy Wan, What Blood is This?, etc. In this version the whole incident turns on the seemingly irrelevant statement:

    It's all about a little holly bush
    That might have made a tree."

Presumably the "little holly bush" is a reference to the sister's pregnancy.