Yanas Tigan

Yanas Tigan was a female Trill who lived in the 24th century. She was the mother of Janel Tigan, Ezri Tigan and Janel Tigan. Tigan owned and operated a pergium mine on Sappora VII that she established herself. Yanas and her husband were estranged.

When her children were young, Yanas and her husband took them to the Jewel Caves. (SS DS9 (Ninety-three Hours))

In 2375, Tigan travelled to to visit Ezri, who had been joined with. Ezri, overwhelmed with the memories of her past hosts introduced herself as Curzon Dax.

Nearly, six months Ezri asked Yanas to use her influence to help find Miles O'Brien, who had gone missing on New Sydney. Yanas was furious that Janel and Norvo had turned to the Orion Syndicate when the company was in financial difficulty. After it was revealed Norvo had killed Morica Bilby, Yanas wondered if she was responsible for his actions. 

In 2376, Ezri experienced a different reality, due to the cathedral artifact, where she had left Starfleet and returned home. In this reality, her mother was pleased that she had done so