Caspar Zyli, also spelled Zili (8 November 1717 â 15 August 1778), was a Swiss merchant and banker who co-founded the predecessor of Wegelin & Co, which was Switzerland's oldest private bank until its dissolution.
Zyli was born 8 November 1717 in St. Gallen, to Hans Anton Zili (1677âÂÂ1744), cloth merchant and carrier, and Maria Magdalena Zili (née Meyer). He had a total of fifteen siblings. His family was fairly affluent and belonged to the Notenstein Guild in St. Gallen.