Cissy Houston died at 91, as confirmed by Whitney Houston's estate. Cissy, a talented singer in her own right, was best known as Whitney's mother. However, "the voice" was only her youngest child, as she leaves behind more children.

Cissy is survived by her sons, Gary Garland and Michael Houston. Houston was married to Whitney and Michael’s father, John Houston, for 31 years. He was Whitney’s manager at one point, and died in 2003. Her oldest son, Gary, was from a previous relationship.

Soul singer Cissy Houston, who was also known as the mother of pop icon Whitney Houston, died Monday morning. She was 91.