Oliver Magnum are:
Mark Mueller - vocals
Monte Humphrey - guitars
Dan Kurtz - bass
Curt Daugherty - drums
Former members: James Randel
Emerging from the heartland of America was Oliver Magnum, who released one well-received melodic power metal album (influenced by early Queensryche) and then more or less faded away, though there was a tape made in 1992, released locally and possibly done as a demo, under the title Drive By. As late as 1999 there were reports of some live activity, but these were probably just a few local reunion gigs.
http://www.bnrmetal.com/v2/search.php?name=Oliver+Magnum
