Okla. Stat. tit. 8, § 6
Whenever an interment is made in any lot transferred to individual owners by the corporation, the same thereby, while any person is buried therein, becomes forever inalienable, and descends in regular line of succession to the heirs at law of the owner, but any one or more of such heirs may release to any other of said heirs his or their interests in the same, and any other joint owners may release to each other in like manner.
R.L. 1910, § 385.