A Sponsor (Godparent) must (a) be at least 16-years-old, (b) received the sacraments of Communion and Confirmation, and (c) must be of good moral character, living a life of faith. One sponsor, male or female, is sufficient, but there may be two, one of each sex (Ref. Canon Law #873-874, “Sponsors”).
If from another parish, the individual will need to provide a letter from her/his parish stating that the sponsor is in good standing at that parish. If married, they must be married in the church.