Cissy Houston, a two-time Grammy winner who sang with Elvis Presley and Aretha Franklin and was the mother of Whitney Houston, died Monday, her family says.

Cissy Houston, Whitney Houston's mother, has died at 91. Houston died in her New Jersey home while under hospice care for Alzheimer's disease.

Cissy Houston, who has died aged 91, was the mother of the troubled star Whitney Houston, and a considerable musical talent in her own right – a double Grammy-winning singer of gospel and R&B and a sought-after backing singer for Elvis Presley,