Source: Erik Amburger database „Ausländer im vorrevolutionären Russland“ (foreigners in pre-revolution Russia) Institut für Ost- und Südosteuropaforschung, Regensburg. (Institute for East and Southeast European Studies).
Here we will find a hint for the date of death for Eduard Peter Johann Hoyer (1888) and in addition to that the age at time of death (38 year), if we calculate back to the known data from Kirchenbuch Pawlowsk 1850 we can be sure to have found the right person.
Furthermore there are additional information about the religion, the former citizenship (german) and the titel (Titularischer Rat).
According to the russisian ranking system for civil servants from 1772 the „Titularische Rat“ (Tituljarnyi sowetnik) is step 9 of 14 (14 is the lowest one). Once again, this is only a civil serveants rank, no noble one ! But after some years in a defined rank you can achieve personal nobility (a form of nobility not to be passed on to descendants).