The title of a purchaser in good faith and for a valuable consideration, from the heir of a person who died seized of real property, shall not be affected by a devise of the property made by the latter unless, within two years after the testator's death, the will devising the same is either admitted to probate and recorded as a will of real property in the office of the recorder of deeds in the judicial division in which the property is situated, or established by the final judgment of the district court, in an action brought for that purpose. But if, at the time of the testator's death, the devisee is either within the age of twenty-one years, or insane, or imprisoned on a criminal charge, or in execution upon conviction of a criminal offense, for a term less than for life; or without the Territory; or, if the will was concealed by one or more of the heirs of the testator, the limitation created by this section does not begin until after the expiration of one year from the removal of such a disability, or the delivery of the will to the devisee or his representative, or to the proper recorder of deeds.