Coat of arms of the Buonaparte or Bonaparte family in San Miniato, near Florence. Sources : 
Archivo di Stato de Firenze, Ms471, shield 311
File of the Kunsthistoriches Institut Firenze
Joshua F. Drake "The partbooks of a Florentine ex-patriate: new light on Florence, Biblioteca Nazionale Centrale Ms. Magl. XIX 164–7", Early Music, 33, 4 (November 2005), p. 639-646