Grateful Dead founding member and guitarist Bob Weir has died, according to a statement posted to his Instagram account. The post said Weir died due to an underlying lung issue after he beat cancer. He was 78. Bob Weir dies at 78: All on Grateful Dead co-founder’s wife, children, net worth (Bobby Weir/Facebook) “It is with profound sadness that we share the passing of Bobby Weir. He transitioned peacefully, surrounded by loved ones, after courageously beating cancer as only Bobby could. Unfortunately, he succumbed to underlying lung issues,” the statement reads. “For over sixty years, Bobby took to the road. A guitarist, vocalist, storyteller, and founding member of the Grateful Dead. Bobby will forever be a guiding force whose unique artistry reshaped American music. His work did more than fill rooms with music; it was warm sunlight that filled the soul, building a community, a language, and a feeling of family that generations of fans carry with them. Every chord he played, every word he sang was an integral part of the stories he wove. …