Who is Uncle Ben from Girls at War, and Other Stories and what is their importance?

Uncle Ben is a bombastic man who relates the most astonishing event of his life in Uncle Ben's Choice. When he was young, Ben was renowned for his good cheer and self-disciple. He never drank too much or made his desires known to loose women. One night, though, he returns home to find a naked woman in his bed. He assumes in the dark that it is her beloved Margaret but soon discovers that it is the goddess Mami Wota. She tries to seduce him, but her refuses. In doing this, he chooses a family over wealth and prosperity. He does not regret his choice, though supposedly the wealthiest man in Nigeria took Mami Wota up on her offer after Ben refused.