Claim: A member of the Grateful Dead was Tom Constanten.
Evidence: The other official members of the band are Tom Constanten -LRB- keyboards ; 1968 -- 1970 -RRB- , John Perry Barlow -LRB- nonperforming lyricist ; 1971 -- 1995 -RRB- , Keith Godchaux -LRB- keyboards ; 1971 -- 1979 -RRB- , Donna Godchaux -LRB- vocals ; 1972 -- 1979 -RRB- , Brent Mydland -LRB- keyboards , vocals ; 1979 -- 1990 -RRB- , and Vince Welnick -LRB- keyboards , vocals ; 1990 -- 1995 -RRB-.