What is the significance of Iris' name in the book, Weather: A Novel?

As Henry’s daughter is named Iris, the imagery of the flower is used as a symbol of faith. With the iris’ connection to Greek mythology, it is often associated with faith, as the goddess Iris acts as a bridge between heaven and earth. When Iris is born, Henry immediately allows himself to be enveloped by the fear that he will fail as a father. However, the symbolism behind the iris suggests that Henry should simply have faith in himself in order to succeed. Though Henry does trigger the destruction of his marriage that leads to a strained relationship with his daughter, by the end of the novel, he is able to have enough faith in himself that he reaches six months of sobriety.