There is more than one artist with this name: 1) Nancy Sue Wilson - jazz diva best known for her 60s standards recordings.
2) Nancy Lamoureaux Wilson - singer, songwriter, and guitarist, and member of the group Heart. 1) Nancy Sue Wilson (born February 20, 1937, in Chillicothe, OH, United States) is a jazz diva famous for recording American standards in the 60s. She was among contemporary music's most stylish and sultry vocalists; while often crossing over into the pop and R&B markets -- and even hosting her own television variety program -- she remained best known as a jazz performer...

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