Upon reaching the age of majority, the appellant and a guardian filed a joint petition to discharge the guardian’s stewardship of the appellant’s estate, which included nearly $1 million from a lawsuit. On May 8, 2014, the Orphans’ Court granted the petition. In December of 2018, the appellant filed the instant action, seeking an accounting of the estate based on two investments that the appellant felt were inappropriate. The Superior Court affirmed the Orphans’ Court’s order granting preliminary objections, holding that res judicata prohibited review of the May 2014 final order.