Discusses Anton Schreiber, a Bohemian violist previously known only as “Schreiber, (‘ﬁrst name unknown’)”, who was most likely the violist of the Schuppanzigh quartet. Albrecht looks at Schreiber’s connection with that ensemble and with the ﬁrst readings and performances of Beethoven’s Op. 59. He reconstructs Schreiber’s life and times, offering biographical information, background on the Rasumovskys, the premier of Op. 59, and Schreiber’s later activities during the period 1807-1830.