Who is Monastery Superior from By the River Piedra I Sat Down and Wept and what is their importance?

Monastery Superior was one of Pilar's friend's closest mentors at the seminary. He knew about Pilar's friend's gift of being able to converse with the Virgin and knew how important it was for the world to have someone like him to realize his gift. At the same time, he knew how much Pilar and her friend loved each other so advises Pilar's friend to leave the seminary and be with her. He does this so that Pilar's friend won't lose out on true love; even though he has found love in the seminary, it is not the same. He encourages Pilar to get her friend out of the seminary and into secular life, where he can still serve the goddess and have a marriage at the same time.