There are at least 2 artists by this name.
1) Dave Williams was first Drowning Pool vocalist and frontman since 1999. He recorded with Drowning Pool one platinum studio album "Sinner", one EP and one Demo. He was found dead on Drowning Pool tourbus during Ozzfest tour in 2002.
2) Dave Williams is a Long Beach legend and one time member of Bargain Music. Read more on Last.fm