---
kind: "section"
citation: "25 C.F.R. § 11.603"
title: "25"
number: "11.603"
heading: "Invalid or prohibited marriages."
url: "https://uscodex.org/cfr/25/11.603"
---

# §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.**

## Notes

### Authority

Authority: 5 U.S.C. 301; R.S. 463, 25 U.S.C. 2; R.S. 465, 25 U.S.C. 9; 42 Stat. 208, 25 U.S.C. 13; 38 Stat. 586, 25 U.S.C. 200.

### Source

Source: 58 FR 54411, Oct. 21, 1993, unless otherwise noted.