Great Lord Set

Gwyn's Set is an armor set in Dark Souls. It can be bought from Domhnall of Zena after the player has defeated Gwyn, Lord of Cinder, and started a new game. The set is composed of the Crown of the Great Lord, Robe of the Great Lord, Bracelets of the Great Lord, and the Anklet of the Great Lord.

In-game Description
Crown:

Crown of Gwyn, Lord of Cinder, who linked the First Flame.

Lord Gwyn, bearer of the ultimate soul, divided his power among his great clan before linking the flame. But he did keep his crown, perhaps to preserve a symbol of the monarch, for its actual power had fully subsided.

Robes:

Robes of Gwyn, Lord of Cinder, who linked the First Flame.

Lord Gwyn, bearer of the ultimate soul, divided that power among his great clan before linking the flame. When he departed, he left with only his greatsword, his garb, and the crown, now bereft of power.