Sierra Wef Serta is a former assassin and wife of Zan Bix'lo Serta. She was a spy for the Creed then left after Altair killed Al Mualim. After that she went on to become a horse rider and trainer. This is how she met Zan. They immediately fell in love. She and Zan got married. THey had two children. A boy named Kiles Serta, and a girl Mierus Serta. Sadly she died twenty years after her husband's apparent death. When Zanb was found to be alive she secretly attended her funeral.