New Mexico Sen. Tom Udall is a cousin. His uncle, Stewart Udall, was interior secretary in the 1960s. His father was the late U.S. Rep. Morris "Mo" Udall of Arizona.
"He was an extraordinary person who touched so many lives," Tom Udall said. "Randy and I were especially close. We shared a love of the mountains and a passion for the wonders of the West, particularly the Wind River Mountains where we hiked and fished together nearly every summer for three decades."
Randy Udall helped found the nonprofit Community Office for Resource Energy Efficiency, which promotes the use of renewable energy in the Aspen, Colo., area.