C. to recognize and confirm by deed of conveyance all bona fide adverse holdings of real estate within the grant: provided, however, that if any such board shall fail or refuse to make such conveyance upon demand the person aggrieved shall have the right to file a bill of complaint in the district court for the county, praying that such board may be compelled to confirm and convey to him and his heirs and assigns the lands described in the bill of complaint. If, upon the hearing of such cause, it shall appear that such person is entitled, under the laws, usages and customs of Spain, Mexico, the state of New Mexico or the United States, to such land, a decree shall be entered in such cause requiring such board of trustees to confirm and convey to him, and his heirs and assigns, the lands aforesaid: provided, however, that no part of the costs of such suit or proceeding [proceedings] shall be taxed to the board of trustees or paid by such board. Any conveyance made in pursuance of the provisions of this article shall operate to conclude all persons claiming by, through or under the original title upon which the owners of such grant base their claim thereto the lands described in such conveyance. The words "owner" or "owners," wherever the same occur in this article, shall be construed to mean the members of the colony or community to which said grant was originally made, or their successors in interest, including all persons residing within the limits of the grant who shall have been in occupancy and adverse possession of any part or portion of such grant for a period of two years or more next preceding February 23, 1905;