Arthur, tome 1 : La Pierre prophétique

Blurb

The Seeing Stone, or Arthur: The Seeing Stone, is a historical novel for children or young adults, written by Kevin Crossley-Holland and published by Orion in 2000, the first book of the so-called Arthur trilogy. Set primarily in the March of Wales during A.D. 1199 and 1200, it features a young boy named Arthur de Caldicot who observes a secondary story in the "Seeing Stone", the early life of legendary King Arthur. Crossley-Holland and The Seeing Stone won the annual Guardian Prize and Tir na n-Og Award.
The trilogy is a contemporary retelling of Arthurian legend, told by Arthur de Caldicot as a first-person narrative, where both the primary and secondary settings contribute to the retelling.