"Roth, Johann C. (Germ.). Mint-engraver at Darmstadt, circ. 1696-1727. By him are also Medals: Ernest Louis Landgrave of Hesse-Darmstadt ... " - Forrer, L. "Biographical Dictionary of Medallists", Bd. 5 (London 1912). S. 224
en
"Roth, Johann C. (Germ.). Mint-engraver at Darmstadt, circ. 1696-1727. By him are also Medals: Ernest Louis Landgrave of Hesse-Darmstadt ... " - Forrer, L. "Biographical Dictionary of Medallists", Bd. 5 (London 1912). S. 224
(The left column lists the relations of this actor to objects in the right column. In the middle you find other actors in relation to the same objects.)
)