Comprising Memoirs of Some of the Most Eminent Welshmen, from the Earliest Times to the Present, Including the Substance of All Previous Researches Into the Literary and Personal History of Aneurin, Taliesin, Llywarch Hen, Asser Menevensis, Giraldus Cambrensis, David Ab Gwilym, Humphrey Llwyd, Dr. John David Rys, Bishop Morgan, and Other Early Welsh Poets and Historians