Solis Tendren is a an influential member of the Vedek Assembly on Bajor with the title of Vedek in the 24th century. He is the uncle of religious radical Cerin Mika and became grand-uncle to Mika and Skrain Dukat's daughter Cerin in 2375.
In 2374, Odo had Solis arrested for collecting donations for Bajoran flood victims on Deep Space 9's Promenade without a permit. He was released in less than a hour, although the fact he was arrested annoyed Kira Nerys. (DS9 episode: "Tears of the Prophets")
In 2376, Mika attempted to convince Vedek Yevir Linjarin to rescind the Attainder on Kira Nerys by threatening him with Solis's influence, which could ruin his career. He refused, leading Mika and several others to attack the Assembly itself when negotiations failed. (DS9 novel: Cathedral)