Gyffard partbooks

The 'Gyffard' Partbooks (British Library [GB-Lbl] Add. MS 17802–5; also spelled Giffard) are an important set of English Renaissance choral partbooks, containing pieces by composers such as Thomas Tallis and John Sheppard, as well as additional unnamed composers, which are not found in other sources. This set of four partbooks were probably mostly copied during the reign of Mary I for use at St. Paul's Cathedral, but copying continued to ca.