Canon 873: There is to be only one male godparent or one female godparent or one of each.
The following are the requirements in order for a Catholic to be a sponsor (Canon 874):
1. The sponsor must be at least 16 years of age
2. He/She has been fully initiated in the catholic Church (received Baptism, Holy Communion, and Confirmation)
3. In good standing with the Catholic Church: live a life of faith which befits the role to be undertaken; not under canonical penalty. (Comes to church regularly every Sunday and is not married outside of the Catholic Church)
4. Not the father or mother of the one to be baptized.