558.14  Grantor described as “spouse” or “heir” — presumption.
  All conveyances or the record title thereof of real estate executed more than ten years earlier, wherein the grantor or grantors described themselves as the surviving spouse, heir at law, heirs at law, surviving spouse and heir at law, or surviving spouse and heirs at law, of some person deceased in whom the record title or ownership of said real estate previously vested, shall be conclusive evidence of the facts so recited as far as they relate to the right of the grantor or grantors to convey, as fully as if the record title of said grantor or grantors had been established by due probate proceedings in the county wherein the real estate is situated.
[S13, §2963-e; C24, 27, 31, 35, 39, §10079; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §558.14]
91 Acts, ch 183, §9