James Patrick Ronaldson Lyell (1871–1948) was a solicitor, author, book collector, and bibliographer.
[3] He wrote a biography of Cardinal Francisco Jimenez de Cisneros, archbishop of Toledo,[4] and Early Book Illustration in Spain.
[5] He was interested in books of known provenance and gathering together the standard texts of the Middle Ages.
[10] After his death, Keeper of the Western Manuscripts at the Bodleian Library, Richard William Hunt, writing of the Lyell bequest noted, "he was a self-taught bibliophile and scholar of extraordinary enthusiasm and discrimination, and one who deserves to be remembered not only by Oxford but by the whole bibliographical world.
[12] The Papers of James Patrick Ronaldson Lyell are in the Bodleian Libraries' archives and manuscripts.