Gwyn Williams has 1 Apollyon concert.

1) APOLLYON was conceived during 1992 by Archdemon Diabolos (a.k.a. M. Bisgaard) and Lord Worros. This pairing conjoured up the opening demo 'Creators Of Evil Thoughts', issued in January 1993. A further two song demo surfaced that May but by the following year, with the defection of Lord Worros, the first incarnation of APOLLYON was laid to rest.