Since the oil company has suspended royalty until this requirement has been satisfied, the company should furnish you with the complete details, preferably from the original title opinion and any supplemental opinions, so that you and your attorney can determine exactly what the examining attorney is requiring. The supplemental opinions, if any, should show you what work has been done on the requirement so that you might focus on the areas yet unworked. I am unfamiliar with probate laws in ND but the title attorney who examined my father's mineral title in Dunn County required an ancillary probate held in ND, so it seems that estates in ND may be required to go through a court hearing to determine heirship? Again, I'm not real clear on this. (In Texas, a person can die and the property automatically vests in the heirs without any probate, administration or other court action, in the event the deceased had no will.) If Myron Olson had a will and such was not presented to the examining attorney, then that may be all you need to find. If you know where Myron Olson lived and died, you probably need to start there to find probate or other evidence of heirship or estate transfer. Our family heirship affidavit was rejected by the examining attorney because no proceeding had been held in ND. We hired an attorney and got the heirship declared and everything was find for us. Hope this is helpful to you and I wish I knew more about ND law. -- Best Regards, Phil