Can ministers from other Christian denominations, for example a United Church Reverend, perform the marriage sacrament in a Catholic Church?
closed as unclear what you're asking by Jayarathina Madharasan, maj nem ɪz dæn, Caleb♦ Jun 28 at 13:46
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According to the United States Conference of Catholic Bishops,
While I wouldn't say a non-Catholic marriage in a Catholic church has never happened (and if I did, it would be hard to prove :), but it would be rare at best, akin to holding services for non-Catholic faiths in a Catholic Church.
FYI, for the a Catholic marriage to be considered sacramental, both must be Catholic, and for the marriage to be performed at all requires at least one to be Catholic. (Source)