Georg Hermann Schuller was a Dutch physician and alchemist. He corresponded with both Spinoza and Leibniz and knew several other figures in their orbit (Steenbakkers 1994, 50). He reports a communication with Tschirnhaus saying that the latter had cleared up some misconceptions that Henry Oldenburg and Robert Boyle had of Spinoza (Ep63). He seems to have come into possession of the autographs of many of the works eventually published in the OP, including Spinoza’s commentary on Boyle’s experiments, the TP, and the TIE. He was also later involved in publishing the OP (see Steenbakkers 1994, 60, 66ff.) In a letter to Leibniz, Tschirnhaus suggests that Schuller was present at Spinoza’s death (Leibniz 1926–, 64; see also Steenbakkers 1994, 58–60), but Schuller seems to have given diverging accounts of this.