Moses Dobruška (12 July 1753 – 5 April 1794) was the first cousin once removed of Jacob Frank, the founder of the Frankist sect who claimed to be the Jewish messiah.[1][2] Dobruška was an alchemist, freemason, writer, and poet. On 17 December 1775 he converted from Judaism to the Catholic faith and took the name of Franz Thomas Schönfeld.[3]
25 July 1778 he was elevated to nobility in Vienna, becoming Franz Thomas Edler von Schönfeld.[4] Together with Ephraim Joseph Hirschfeld, who did not convert, he became one of the main conspirators of the “Knights of St. John the Evangelists for Asia in Europe,” a secret society of freemasons, which was much talked about in Germany and Austria between 1783 and 1790, not least because it was the first German-speaking fraternal order to accept Jews.
In 1792, in the wake of the French Revolution, he traveled via Strasbourg to Paris and became a Jacobin, changing his name, once again, to Junius Frey. The new name derived from Junius from the Roman Junii-family that fostered the famous tyrant slayers the Brutus', and Frey being the German tranliteration for "liberty".
He was arrested for treason and espionage and executed by guillotine on 5 April 1794 in connection with the case against his brother-in-law François Chabot.[5]