Va. Code Ann. § 28.2-1514

In any administrative proceeding before the Commission under this chapter, or in any proceeding for the resolution of conflicting claims to inventoried property under Article 4 (§ 28.2-1509 et seq.) of this chapter, the Commission or court may consider any relevant and credible evidence including, but not limited to, deeds, grants, maps, plats or other historical documents.