Wilhelm Gottsreich Sigismond von Ormstein

From Memory Alpha, the free Star Trek reference

Wilhelm Gottsreich Sigismond von Ormstein was a character in the Sherlock Holmes short story "A Scandal in Bohemia".

The Sherlock Holmes holoprogram included von Ormstein's snuff box, placed on the mantelpiece in Sherlock Holmes' apartment. (TNG: "Elementary, Dear Data")