Sayyeda Zainab (s.a.), the daughter of Imam Ali (a.s.) and Sayyeda Fatima (s.a.), was an exemplary woman of great ability, intelligence, knowledge, insight, courage and perseverance; she performed her divine duties to the best of her ability. She was born to a family formed by the Prophet (SAW), the most outstanding figure in history. The Prophet"s wife Sayyeda Khadija (s.a.) a devoted woman was her maternal grandmother, and her paternal grandmother was Fatima daughter of Assad, who mothered and nursed the Prophet (SAW). The members of the family, in trio hierarchical order, were all great.
Sayyeda Zainab (s.a.) was a brilliant star in the mandate sky that received rays of holiness from the five suns.
It was through her holy origins and pious edification that she manifested so great a fortitude in Karbala (Iraq).
The life of the daughter of Sayyeda Al-Zahra (s.a.) was always laden with hardships, but she never feared coping with difficulties, this enhanced her endurance and elevated her soul.
source : www.tebyan.net