Madza Bral

Madza Bral was an Trill politician of the early-23rd century. She was elected to the post of Federation President in the 2200s, and was the first President of the Federation that wasn't from one of the four founding planets. (novel: Star Trek: Articles of the Federation)


 * This seems to indicate that the Trill were members of the Federation as early as the late 22nd century.