The Welsh bard Guto'r Glyn flourished between c. 1430 and c. 1490 and is one of the outstanding poets of the golden age of Welsh poetry. Born in the Dee Valley, he was buried at the monastery of Valle Crucis near Llangollen. Based on a close reading of his poems and those of his fellow bards, this book provides the first full biography. It describes Guto's career as poet and soldier and follows him into the courts of his patrons, lay and ecclesiastical, in North and South Wales. The work explores the social and cultural world of fifteenth century Wales and analyses Guto's reflections on the major political events of his day.