If the subscribing witnesses to a will are competent at the time of attesting its execution, their subsequent incompetency, from whatever cause it may arise, does not prevent the probate and allowance of the will, if it is otherwise satisfactorily proved.
Okla. Stat. tit. 84, § 145
Subsequent incompetency of witnesses immaterial
R.L. 1910, Sec. 8379
Official source: Oklahoma Legislature. Reproduced from public-domain Oklahoma statutes; confirm against the official source for the current text. Not legal advice.