10.-(1) The probate registrars shall not allow probate or letters of administration to issue until all inquiries which they may see fit to institute have been answered to their satisfaction. The probate registrars are notwithstanding, to afford as great facility for the obtaining grants of probate or administration as is consistent with a due regard to the prevention of error or fraud.
(2) The probate registrar shall require evidence, in addition to that offered by the applicant, where additional evidence in that behalf seems to the probate registrar necessary or desirable, in regard to the identity of the deceased or of the applicant, or in regard to the relationship of the applicant to the deceased, or in regard to any person or persons in existence with a right equal or prior to that of the applicant to the grant of probate or administration sought by the applicant, or in regard to any other matter which may be considered by the probate registrar relevant to the question whether the applicant is the proper person to whom the grant should be made:
Provided that the probate registrar may refuse the grant unless the applicant produces the required evidence on these points or any of them.