It is the Catholic understanding that godparents, in a liturgical and canonical sense, should themselves be members of the Church or ecclesial Community in which the baptism is being celebrated. They do not merely undertake a responsibility for the Christian education of the person being baptized (or confirmed) as a relation or friend; they are also there as representatives of a community of faith, standing as guarantees of the candidate’s faith and desire for ecclesial communion.
a) However, based on the common baptism and because of ties of blood or friendship, a baptized person who belongs to another ecclesial Community may be admitted as a witness to the baptism, but only together with a Catholic godparent.[107] A Catholic may do the same for a person being baptized in another ecclesial Community.
b) Because of the close communion between the Catholic Church and the Eastern Orthodox Churches, it is permissible for a just cause for an Eastern faithful to act as godparent; together with a Catholic godparent, at the baptism of a Catholic infant or adult, so long as there is provision for the Catholic education of the person being baptized, and it is clear that the godparent is a suitable one.
.A Catholic is not forbidden to stand as godparent in an Eastern Orthodox Church, if he/she is so invited. In this case, the duty of providing for the Christian education binds in the first place the godparent who belongs to the Church in which the child is baptized
No.I’m pretty sure I know the answer (No!) but I need to get some official sources: can a Catholic stand as God-parent for an Anglican child relative?
Many thanks in advance and if you can provide official Canon Law or other references, even better!