Of course, this option is possible, but it might be very long and may not lead to the desired outcome. In order to correctly formalise the right to inherit, you need the detailed work of lawyers and historians, perhaps knowledge of foreign languages, and often the search for people by detectives. In order to issue an inheritance, you will need to establish and prove not only your rights, but also the entire inheritance community, which belongs to a certain line by law. The absence of only one heir makes it possible to challenge the certificate of right to inheritance and the withdrawal of the share paid. It might be in your interest to trust specialists and get qualified help.