Master of the Order or Mistress of the Order, alternatively referred to as simply Master or Mistress of the Baran Do, was the designation given to the chief Master of the Baran Do sages.
Back in 34 ABY, Jacen Solo, who was at that time a Jedi Knight, journeyed to Dorin to find the Baran Do sages. Their then-current Master of the Order, Koro Ziil, instructed him in various Force techniques. Approximately around 43 ABY, Ziil became a member of the Hidden Ones, and by the time that Luke Skywalker, the exiled Jedi Grand Master visited later that same year, Tila Mong had ascended to the position of Mistress of the Order.