Seven Lost Gods

The "Seven Lost Gods", or simply the "Lost Gods", was a collective term used at different times for several different sets of deities and primordials. Numbering seven or even a host, they were of mysterious and ancient origin and caused disagreement and confusion among sages.

The Seven Lost Gods of Antiquity
The name "Seven Lost Gods" originated in ancient times, and properly included seven demipowers who were defeated by or submitted to the god Bane, the Black Lord. For example, in Urgund's Description of Darkness, an account by Urgund of his imprisonment in the lower planes, the five entities named above were "those who fell down and became servants of the great lord Bane" and later sat in his Hall of Minor Courtiers as lesser powers. These were: and two more whose names were lost to history.
 * Maram of the Great Spear;
 * Haask, the Voice of Hargut;
 * Tyranthraxus the Flamed One;
 * Borem of the Lake of Boiling Mud;
 * Camnod the Unseen;

These entities may have been primordials, and other candidates included Dendar the Night Serpent and Kezef the Chaos Hound.

In certain occult beliefs, one of the seven was slain by the mortal Bane, Bhaal, and Myrkul as part of their apotheosis to divinity. Based on an inscription on a menhir on Mezeketh Isle discovered by Zembrath Klun in 1359 DR, Borem was the slain god.

The Seven Lost Gods of Westgate
The Cloak & Dagger Web Enhancement mentions two different sets of Seven Lost Gods. Originally, the term referred to the seven demipowers that bowed before Bane long ago, including the five already named and two others whose names have been forgotten. More recently, seven deities were worshiped in temples outside the city of Westgate during the Templeban Edict (927 DR to 1018 DR).

Faiths & Avatars has a little more on the Lost Gods of Westgate. It says that each temple is beneath one of the seven hills to the west of the city, topped with a ring of standing stones. The southernmost is the Hill of Fangs, formerly a temple of Moander.

The other Lost Gods of Westgate are Garagos, Ghaunadaur, Jergal, Savras, Silvanus, and one deity whose name has been forgotten.