Fitzwilliam Virginal Book
The Fitzwilliam Virginal Book is a primary source of keyboard music from the late Elizabethan and early Jacobean periods in England, i.e., the late Renaissance and very early Baroque. It takes its name from Viscount Fitzwilliam who bequeathed this manuscript collection to Cambridge University in 1816.
Source: Wikipedia — Fitzwilliam Virginal Book (CC BY-SA 4.0)