Memory, Sorrow, and Thorn is a trilogy of epic fantasy novels by American writer Tad Williams, comprising The Dragonbone Chair (1988), Stone of Farewell (1990), and To Green Angel Tower (1993). Memory, Sorrow, and Thorn takes place on the fictional continent of Osten Ard, comprising several united countries. Williams used several characters, both protagonist and antagonist, as point of view characters throughout the novels, presenting the reader with an assortment of disparate and subjective viewpoints. A novelette set in the world of Osten Ard, The Burning Man, was released in 1998 and later published as a graphic novel. A sequel trilogy, The Last King of Osten Ard, began publication in 2017, following 2017's The Heart of What Was Lost. A prequel to the entirety of Osten Ard, Brothers of the Wind was published in 2021. Source: Wikipedia (en)