Is my marriage legal got licens preacher married us but did not file licens preacher died?

Your marriage will be legal if it was conducted according to the laws of the country in which you were married.

These laws would normally require the ceremony to be conduced by an authorized individual who would require that a marriage certificate was signed by both parties, him/her self and some witnesses.

Part of this certificate will be kept by the sate as an official record of the marriage and part will be given to the married couple as proof of the event.

Thus the death of the preacher (the authorized individual) should not make any difference as the records (the bits of paper) are all that matter.