The Thornton romances. The early English metrical romances of Perceval, Isumbras, Eglamour, and Degrevant. Selected from manuscripts at Lincoln and Cambridge
Halliwell-Phillipps, J. O. (James Orchard), 1820-1889; Isumbras; Eglamour; Perceval; Degrevant; Thornton, Robert, fl. 1440