One of our fellow listers on the Csaladtortenet mailing list posted a page that is a collection of a dozen or so names whose heirs are unknown. The deceased persons were all born in Hungary.

Probate services like Budapest's Family Tree, Ltd. has been in this industry for a couple of years now. They specialize in finding relatives/heirs of persons linked to Eastern Europe.

This posted service of the Consular Service of the Hungarian Ministry for Foreign Affairs contains approaches of foreign legal services trying to establish the links with would-be claimants.

Heirs are sought.