About Thomas Ap Gwilym
- A history of the family of Morgan, from the year 1089 to present times ([1902?])
- VIII. LLEWELYN ap IVOR of Tredegar, Lord of St Clear, married Angharad, daughter of Sir Morgan ap Meredith, from the Welsh Lords of Caerleon, ap Griffith ap Meredith ap Rhys, who bore "Argent a lion rampant sable." Sir Morgan died 1332, when Angharad was aged 32. They had : 1. Morgan. 2. Ivor Hael, whence MORGAN OF GWERN-Y-CLEPPA. 3. Philip, whence LEWIS OF ST. PIERRE.
- IX. MORGAN of Tredegar and St. Clear, married Maud, daugter of Rhun ap Grono ap Llwarch, Lord of Cibwr. He died before 1384. Issue: 1. Llewelyn. 2. Philip, whence MORGAN OF LANGSTONE. 3. John, father of Gwenllian, married David Goch ap David, 4. Christian, married Jevan ap Jenkin Kemeys. 5. Ann, married David Gwilim David of Rhiwperra. 6. Margaret, married Traherne ap Meyric of Merthyr. 7. A daughter, married Thomas ap Gwillim of Carnllwyd. 8. Elenor, married Grono ap Howel Bennet.