If the Probate Registry issues a grant of Letters of Administration to a kin of the deceased and then issues a grant of Letters of Administration to an applicant claiming to be a common-law spouse, then a competing administration of the estate has been created and one grant needs to be revoked. Would the 2nd grant be revoked on the basis it was issued when an existing grant was in place? Would the 1st grant be revoked on the basis it was issued to a lesser priority party? Would a common-law spouse have to prove they were in fact the common-law spouse first before either grant was revoked? What would be the various procedures or methods one could consider taking to resolve this issue legally?