It was up to the Russian chemist Karl Klaus to verify their existence, which he did in 1844 by isolating measurable quantities of ruthenium.
Gottfried Wilhelm Leibniz | Gilbert Gottfried | Johann Gottfried Herder | Gottfried Keller | Gottfried von Einem | Gottfried Silbermann | Gottfried August Bürger | Johann Gottfried Schadow | Gottfried Ludolf Camphausen | Mike Gottfried | Johann Gottfried Gruber | Gottfried Semper | Martin Gottfried Weiss | Johannes Gottfried Hallier | Heinrich Gottfried Ollendorff | Gottfried Reinhold Treviranus | Gottfried Reinhardt | Gottfried Kirch | Gottfried Helnwein | Gottfried Heinrich Graf zu Pappenheim | Christian Gottfried Ehrenberg | Christian Gottfried Daniel Nees von Esenbeck | ''Robin'' Alexander Wolfgang Udo Eugen Wilhelm Gottfried of Sayn-Wittgenstein-Berleburg | Paul Gottfried | Mark Gottfried | Kurt Gottfried | '''Karoline Bauer''' (in a white dress) with a group of artists, including Johann Gottfried Schadow | Johann Gottfried Zinn | Johann Gottfried Tulla | Johann Gottfried Seume |