Not their original bass player, but Douglas Lee Dorman (September 15, 1942 – December 21, 2012) according to Wiki = was an American bass guitarist best known as a member of therock band Iron Butterfly. He also played in the band Captain Beyond. Dorman was from St. Louis, Missouri, and moved to San Diego, California in the 1960s. He began playing bass guitar in his teens. While recording In-A-Gadda-Da-Vida, Dorman assisted Erik Brann with the arrangement of Brann's song "Termination," and was given a co-writing credit. Dorman died of natural causes at his home in Laguna Niguel, California on December 21, 2012. Before Dorman, the bass players were Greg Willis (original), and Jerry Penrod. The band formed in 1966 in San Diego. The original members were Doug Ingle (vocals, organ), Jack Pinney (drums), Greg Willis (bass), and Danny Weis (guitar). They were soon joined by tambourine player Darryl DeLoach. DeLoach's parents' garage on Luna Avenue served as the site for their almost nightly rehearsals.
My take on this band is this: they or their manager made perhaps the most bone-headed move in the history of booking (or not) an act for a concert, venue, or festival. According to Michael Lang's superb book on Woodstock (he co-founded it), Iron Butterfly, when invited to play at Woodstock, requested too many ups, extras, and perks. Land and Kornfeld et al. rejected their requests by simply withdrawing their invitation to IB to play.