The following is from California's FAQ page: Where do I register to perform marriages in California? The laws of the State of California make it unnecessary for persons performing marriages to file credentials with the clerk of the court or with anyone else. The county and state are removed from any responsibility for verification of credentials. The State does not maintain a central registry of members of the clergy. Any such concern for verification is totally at the discretion of the parties to the marriage. (Universal life Church / The Monastery.org still recommends that you check with the county clerk where the ceremony will be held.) What authorization do I need to perform a marriage in California? In California, it is the ordination or investment by the denomination that gives each clergy member the authority to perform the marriage rite. Family Code, Sections 400-402 are the statutes pertaining to whom can solemnize a marriage in California. The following is from California Family Code sections: 400. Marriage may be solemnized by any of the following who is of the age of 18 years or older: 420. A priest, minister, or rabbi of any religious denomination. No particular form for the ceremony of marriage is required for solemnization of the marriage, but the parties shall declare, in the presence of the person solemnizing the marriage and necessary witnesses, that they take each other as husband and wife. 421. Before solemnizing a marriage, the person solemnizing the marriage shall require the presentation of the marriage license. If the person solemnizing the marriage has reason to doubt the correctness of the statement of facts in the marriage license, the person must be satisfied as to the correctness of the statement of facts before solemnizing the marriage. For this purpose, the person may administer oaths and examine the parties and witnesses in the same manner as the county clerk does before issuing the license. 422. The person solemnizing a marriage shall make, sign, and endorse upon or attach to the marriage license a statement, in the form prescribed by the State Department of Health Services, showing all of the following: (a) The fact, date (month, day, year), and place (city and county) of solemnization. (b) The names and places of residence of one or more witnesses to the ceremony. (c) The official position of the person solemnizing the marriage, or of the denomination of which that person is a priest, minister, rabbi, or member of the clergy. (d) The person solemnizing the marriage shall also type or print the person's name and address. 423. The person solemnizing the marriage shall return the marriage license, endorsed as required in Section 422, to the county recorder of the county in which the license was issued within 10 days after the ceremony. 424. At the request of, and for, either party to a marriage, the person solemnizing the marriage shall issue a marriage certificate showing the facts specified in Section 422.