Trinity College, Queen Mary, Lamont, Ballinderry, Cloyne, Otway, O'Fogarty, Kildare, Sirr, Mullagh Mast, Rose Mooney, O'Neill, Downhill, Bunworth, Hollybrook, Malahide 1, Malahide 2, Clonalis, Others, Foreign
Wartburg, Rome, Nuremberg, Leipzig, Hofburg, Bologna 2, Estense, NMM, Kaiser, Barberini, Bologna 3, Evans, Boston, Sondershausen, Eisenach, Augsburg, Rabe
Dated to the 15th century
Kept at Museo Nazionale degli Strumenti Musicali, Rome, Italy.
"Gothic" design; 26 strings
I do not know anything more about this instrument.
Simon Chadwick