Section 13. A deed, release or mortgage containing a statement of the marital status of a grantor may be relied upon by a good faith purchaser for value. As to acts undertaken in good faith reliance on such deed, release or mortgage, an affidavit executed and acknowledged by the grantor, releaser or mortgagor under penalty of perjury stating that, at the time of delivery of the deed, release or mortgage, the affiant had no spouse then entitled to claim the benefit of an existing estate of homestead, shall be conclusive proof of the nonexistence of such benefit at that time. The affidavit may be recorded in connection with the execution and delivery of a deed, release or mortgage and shall be accepted in the appropriate registry of deeds and registry district of the land court. The subsequent residency or renewal of residency in the home by a spouse of the grantor, releaser or mortgagor shall not defeat the priority of a mortgage, release or conveyance accepted in reliance on such affidavit.