Thanks to the clues you great folks gave me I managed to track this down.
For those who wer curious, here's part of the reply I sent to my inquirer
from the Netherlands--
Bless the Internet and online library catalogues. Once my Mythopoeic
Society colleagues informed me that Cath Filmer was the founder of the
organization (see below), I tried checking the catalogue of her former
University, the University of Queensland. According to the catalogue
entry, The Ring Bearer was published 1983-1991and then superseded by the
Journal of Myth, Fantasy & Romanticism in 1992. That ceased publication in
1996 or 1997.
Edith L. Crowe
Corresponding Secretary of the Mythopoeic Society
[Non-text portions of this message have been removed]