Tyszkiewicz (born 1862 in Poland) is identified in German photographic reproductions of this period as Graf B. Tyszkiewicz, evidenced by the printing attribution for this particular photogravure in the lower left corner.  Graf is German for “count”. Similarly, French reproductions include “Comte” (count in French)  In Juhl, besides being an amateur photographer, Tyszkiewicz is identified as a painter who dedicated himself in his palace in Howory/Polon to the history of wall painting. 1.

1. Kunstphotographie um 1900 – Die Sammlung Ernst Juhl : Museum für Kunst und Gewerbe Hamburg: 1989: p. 294