Della Volpaia

Florentine family of clockmakers, goldsmiths, astronomers, mathematicians, inventors and cartographers whose members included Lorenzo (1446-1512), Bernardo (c. 1475-1522), Camillo (1484-1560), Benvenuto (1486-1532), Eufrosino (late 15th – 16th century) and Girolamo (c. 1530-1614).
In January 1504 Lorenzo was with Leonardo among the experts consulted on where to place Michelangelo's David. It is highly probably that Lorenzo and Leonardo exchanged their experience on the subject of clock-making and other technological studies.
In Venice, at the Marciana Library, is the manuscript of «Benvenuto di Lorenzo di Benvenuto della Golpaia composed and illustrated by his hand with many beautiful inventions and their bases», in which are found notes on technologies and inventions attributable to Leonardo: «Copy of an instrument sent by Lionardo da Vinci to Bernardo Ruciellai of France, made by a countryman from Domodossola, the drawing of which appears here» (7v); in addition to the method for dividing a line into equal parts (39r); and into "sixths" (49v).
In Florence, at the Medici Laurentian Library, is the Antinori Manuscript ("Della Golpaia Girolamo, Benedetto, Benvenuto and Lorenzo: Studies in clock-making, mechanics, and astronomy, with pertinent figures and explanations from the 16th century"), while in the National Central Library are the Magliabechian manuscripts, such as the one "Copied by j libriccino by the hand of Lorenzo our father" and compiled by Eufrosino, with the project for the planetary clock.
In the Museum of the History of Science in Florence are displayed the nocturnal clock signed and dated "Laurentius Vulparia Florentinus 1511", a quadrant with sundials on a plate by Camillo di Lorenzo, a compass in the shape of a dagger by Benvenuto di Lorenzo, two armillary spheres, two nocturnal clocks, a sundial a solar quadrant and two sundials by Girolamo di Camillo.