Okla. Stat. tit. 10, § 11
If a parent chargeable with the support of a child dies, leaving it chargeable upon the township or county, and leaving an estate sufficient for its support, the officers of the poor, in the name of the township or county respectively, may claim provision for its support from the parent's estate by civil action, and for this purpose may have the same remedies as any creditors against that estate, and against the heirs, devisees, and the next of kin to the parent.
R.L. 1910, § 4374.