Joachim Edler von Popper (20 October 1722 – 11 May 1795) came from a family of entrepreneurs and communal leaders from Březnice (Breznitz) in the Kingdom of Bohemia, now the Czech Republic.
Joachim Popper moved from Březnice to Prague and prospered there as a merchant (woolens, potash, whalebone), banker and manufacturer.
Leopold divided the monopoly into leases and awarded them to Joachim, Israel Edler von Hönigsberg, and Salomon Dobruschka.
[2] He founded a beth midrash in Prague with Israel Fränkel, and helped fund the construction of the Popper Synagogue.
He also adopted his nephew Abraham Löbl Duschenes, who inherited his title as Andreas Josef Edler von Popper, and Elke Joß, who married Moses Dobruška.