Oregon Revised Statutes Domestic Relations § 106.130

A marriage solemnized before any person professing to be a judicial officer of this state, a county clerk or a clergyperson of a religious congregation or organization therein is not void, nor shall the validity thereof be in any way affected, on account of any want of power or authority in such person, if such person was acting at the time in the office or the capacity of a person authorized to solemnize marriage and if such marriage is consummated with the belief on the part of the persons so married, or either of them, that they have been lawfully joined in marriage.