ObituariesObituary: Robert SernaThe long-time Martinez resident died on May 16.Jim Caroompas, Patch StaffPosted Sun, May 20, 2012 at 12:58 pm PT|Updated Sun, May 20, 2012 at 1:06 pm PT//Get more local news delivered straight to your inbox. Sign up for free Patch newsletters and alerts.ThankShareWe’ve removed the ability to reply as we work to make improvements. Learn more here