DISPENSATION FROM CANONICAL FORM
DISPARITY OF CULT
One of the impediments to a Catholic marriage is disparity of cult ie. a person who is baptized in the Catholic church or has been received into it and has not left it by a formal act cannot validly contract canonical marriage with another person who is non baptized. Without the due dispensation, such a marriage would be invalid ab initio.
A mixed marriage is that which is contracted between two baptized persons, one of whom was baptized in the Catholic Church or received into it after baptism and has not left it by a formal act and the other of whom is a member of a church or ecclesial community which is not in full communion with the Catholic Church. In other words, this involves a Catholic and a Christian with a valid baptism but not in the Catholic Church e.g., Orthodox Churches, many Protestants, Anglicans, Episcopalians and Presbyterians. Such a mixed marriage is valid but it is forbidden without the express permission of the competent authority of the local Ordinary who will grant it only if there is a just and reasonable cause and the necessary cautions.
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