Okla. Stat. tit. 56, § 56-146: Class of widows entitled

The provisions of this law shall not apply to any woman whose

husband is not dead or who is not confined in the Oklahoma State

Penitentiary or other prison in this state, or is in a state

institution for the insane in this state, and in the two latter

cases it shall not apply unless such prisoner is the lawful husband

of the woman seeking such allowance.