Glyndŵr's home at Sycharth. Siôn Cent (c. 1400 – 1430/45) Traditionally associated with Breconshire, Siôn Cent is most famous for using his poetry in the service of his Christian beliefs, and standing outside the tradition of praise of patron. He uses the cywydd for his work, to attack the sins of this world. Perhaps his most famous poem is I wagedd ac oferedd y byd (English: "[In praise of] the vanity and dissipation of the world"). He turns his back on the praise of nobles, which he sees as flattery and falsehood, and sets his eyes on the blessedness of heaven. Guto'r Glyn (c. 1435 – c. 1493) Guto'r Glyn is associated with Glyn Ceiriog, Denbighshire, where many of his patrons lived. He also wrote poems for other patrons in the four corners of Wales whose houses he visited on his journeys. He was a master of the praise tradition in poetry. Guto was also a soldier who fought on the Yorkist side during the War of the Roses, but spent his last years as a lay guest at the Cistercian abbey of Valle Crucis, near Llangollen (a short distance from Glyn Ceiriog). Dafydd Nanmor (fl. 1450 – 1490) Dafydd Nanmor, born at Nanmor (or Nantmor), Gwynedd, is one of the most significant poets of this period. It is said that he was exiled to south Wales for overstepping the mark in his poetry and spent the rest of his life outside Gwynedd. The 20th-century critic Saunders Lewis saw particular significance in his work. Lewis saw him as a poet of philosophy who praised the ideal ruler as he praised his patrons who saw that within the Welsh tradition all who had privilege and power also had responsibilities towards family, community and nation. Tudur Aled (c. 1465 – c. 1525) Tudur Aled was himself a nobleman and one of the greatest of the Poets of the Nobility. Born in Llansannan, Denbighshire, his most important patrons were the Salisbury family of Dyffryn Clwyd. He was one of the instigators of the Caerwys eisteddfod of 1523. In his final illness he took the habit of the Order of St. Francis and died in Carmarthen, where he was buried in the Brothers' Court. At his death the elegies his fellow poets wrote in his memory attested to his greatness as a poet. He was renowned as a praise poet of both secular and