Former Forbidden and Nevermore guitarist Tim Calvert has sadly passed away at the age of 52. His death follows a battle with an aggressive form of amyotrophic lateral sclerosis (ALS). R.I.P. Calvert’s sister, Vicky Calvert-Hawkins said the following: “Heaven has gained another 😇 angel, my big bro, Tim Calvert. Tim passed away peacefully, Monday morning,…