Okla. Stat. tit. 58, § 58-127: Requisites of petition for administration

Petition for letters of administration must be in writing,

signed by the applicant or his counsel, and filed with the judge of

the court stating the facts essential to give the court jurisdiction

of the case, and when known to the applicant, he must state the

names, ages and residence of the heirs of the decedent, and the

value and character of the property. If the jurisdictional facts

existed, but are not fully set forth in the petition, and are

afterwards proved in the course of administration, the decree or

order of administration and subsequent proceedings are not void on

account of such want of jurisdictional averments.