I think that R L Bayliss is the part owner of the remaining 8% of the ORRI.

About the overriding royalty interests

The total amount of the private ORRIs is 12 per cent. The ORRI entitles its owners to earn 12 per cent of the gross well head proceeds of any future production, subject only to transportation and marketing costs. CRIAG is the owner of 4 per cent with the balance of 8 per cent being held through a small number of families based primarily in the United States. The privately held ORRIs were created during the years 2006 to 2008 when the exploration permits were sold by their original owners.