Name
- La Valette, Jean-Louis de Nogaret, Duc d' Epernon, royal favourite, 1554-16421
- Landroni, Pietro1
- Lanfredini, Lucrezia de', née Popoleschi; wife of Bartolomeo di Giuliano Lanfredini1
- Lenzoni, Family1
- Leoni, Family1
- Leopold, Archduke of Austria, of Add MS 487671
- Lodi, Alessandro, Grand Prior of the Order of St Stephen1
- Louis XIII, of France1
- Louis XIV, King of France, 1638-17151
- Luna y Mora, Gonçalo, Maestre de Campo1
- Lupi, Jacopo Antonio, jurist1
- Luziano, Andrea di Lancelotto da1
- Mackenzie, Colin A.1
- Magalotti, Family1
- Maggi, Pier Matteo, jurist1
- Magi, Francesca, chambermaid of G de' Medici1
- Malatesta, Family1
- Manrique, Juan Fernandez, Marqués de Aguilar, Imperial Ambassador at Rome1
- Marchetti, Orazio, of Pistoia1
- Marmeggi, Angiolo1