What is the nickname for the original member of Grateful Dead?

What is the nickname for the original member of Grateful Dead who play keyboard %26amp; harmonica, and how old he was when he died.|||Ronald C. "Pigpen" McKernan (September 8, 1945 鈥?March 8, 1973) was a founding member of the Grateful Dead. His contributions to the band included vocals, Hammond organ, harmonica, percussion, and occasionally guitar. In 1994, Pigpen was inducted into the Rock and Roll Hall of Fame, along with the other members of the Grateful Dead.|||Pigpen and he was 27