CFR > Title 25 - Indians > CHAPTER I—BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR > SUBCHAPTER B—LAW AND ORDER (parts 10 to 13) > PART 11—COURTS OF INDIAN OFFENSES AND LAW AND ORDER CODE > SUBPART F—Domestic Relations (§11.600 to §11.611) > 11.603—Invalid or prohibited marriages.

11.603—Invalid or prohibited marriages.

(a) The following marriages are prohibited:
(1) A marriage entered into prior to the dissolution of an earlier marriage of one of the parties;
(2) A marriage between an ancestor and a descendant, or between a brother and a sister, whether the relationship is by the half or the whole blood;
(3) A marriage between an aunt and a nephew or between an uncle and a niece, whether the relationship is by the half or the whole blood, except as to marriages permitted by established tribal custom;
(4) A marriage prohibited by custom and usage of the tribe.
(b) Children born of a prohibited marriage are legitimate.