The Watersons -- Norma, her sister Lal, brother Mike, cousin John Harrison, and (later) Norma's husband Martin Carthy -- defined the English trad-folk revival of the 1960s. In the '90s, Norma Martin and their daughter Eliza Carthy, morphed into Waterson:Carthy. Even in ill health, Norma was recording until a few years ago. Her contributions to -- and influence on -- English folk music cannot be overstated.