Norma Waterson

Norma Christine Waterson (born 15 August 1939) is an English musician, best known as one of the ‎original members of The Watersons, a premier English traditional group. Other members of the ‎group included her brother Mike Waterson and sister Lal Waterson, and in later incarnations of the ‎group her husband Martin Carthy.‎

http://en.wikipedia.org/wiki/Norma_Waterson
http://www.watersoncarthy.com/id23.htm