Fontana

Fontana 14.8.1798 at Joseph Johnson's
Perhaps Gregorio Fontana 1735-1803 colleague of Volta's at Pavia, wrote to Sir Joseph Banks 1787, or Felice Fontana 1730-1805 Florentine scientist. I could find no reference to either of them visiting England at this time in the Italian Biographical Dictionary though I don't read Italian very well