beurs

The Van der Beurze family ran an inn in Bruges in the thirteenth century. Their family crest featured three purses — beurzen in Dutch, from Latin bursa (purse), from Greek byrsa (hide, leather). Merchants gathered at the inn to trade commodities, exchange currencies, and settle debts. By the 1350s, 'going to the Beurze' meant going to conduct financial business. The family name became a common noun.

The idea spread with Flemish commercial practice. Antwerp established its own beurs in 1531, the first purpose-built exchange building in Europe. The concept traveled to France as bourse, to Germany as Börse, to Italy as borsa. When Amsterdam opened its exchange in 1602 to trade shares of the Dutch East India Company — the first publicly traded stock — the building was called the Amsterdamse Beurs. The word was already standard across Europe.

London resisted the term. Thomas Gresham built the Royal Exchange in 1571, deliberately avoiding the foreign word. But across the Channel, every major financial center used some version of bourse. The Paris Bourse, the Frankfurt Börse, the Milan Borsa — all named for a medieval innkeeper's coat of arms. The English-speaking world preferred 'exchange' or 'stock exchange,' but the rest of Europe kept the Bruges word.

The Van der Beurze inn no longer exists. The family faded from history. But their name, derived from a leather purse, is spoken every trading day in Paris, Frankfurt, Milan, Istanbul, Cairo, and dozens of other cities. A coat of arms with three purses became the generic word for the place where money changes hands at scale.