Who was Luc Antoine Eustache, the Inventor of Three-Course Harp according to Mersenne?

Transcript of conference paper presentation by the musicologist Dinko Fabris, on possible answers as to how the triple harp was invented and by whom. Fabris began to answer the latter through preliminary research into Marin Mersenne’s claim in Harmonie Universelle (1637) that the harp “à trois ordres” was invented by one “Luc Antoine Eustache” or Luca Antonio Eustachio, sometime between 1596 and 1606. Harfenlabor invited Fabris to present his initial findings at the Convening around the Barberini Harp, a symposium organised by Harfenlabor that took place on December 14-16, 2016, at the Museo Nazionale degli Strumenti Musicali and at the Istituto Storico Austriaco, Roma. At that point in time, Fabris aimed to verify Eustachio very existence, as well as his history and importance. This talk presents an outline for a biography of this musician and papal chamberlain, in service of the Borghese, Bentivoglio and the Barberini families, who went onto political appointments, to eventually become the governor of Monterotondo. You can find the recording of the presentation here: https://www.harfenlabor.com/research/who-was-luc-antoine-eustache-the-inventor-of-three-course-harp-according-to-mersenne/.