Lathander

Lathander
Alignment	Neutral Good
Divine Rank	Greater God
Pantheon	Faerun
Portfolio	Athletics, Birth, Dawn, Spring, Vitality, Youth
Domains	Good, Nobility, Protection, Renewal, Strength, Sun
Home Plane	Morninglory, in the House of Nature (Elysium)
Worshippers	Good folk, Creative folk, Rich folk, Fit folk.
Favoured Weapon	Dawnspeaker (Mace)

Lathander is/was the main god of the Sun in the Forgotten Realms campaign setting. While he is one of the most significant gods of the setting, his status is in a bit of uncertainty. He is probably the reborn aspect of a much older god of the Sun: Amaunator (see below) but unusually for divine aspects, the two deities have quite varied goals and portfolios.

Lathander is probably also Pelor from the core setting, though probably a younger, more handsome version of Pelor.

Amaunator

Amaunator
Alignment	Lawful Neutral
Divine Rank	Greater God / Dead God
Pantheon	Faerun
Portfolio	The Sun, Law, Contracts, Bureaucracy, more Law and Time (by legal technicality)
Domains	Law, Nobility, Planning, Sun, Time
Home Plane	House of Nature (Mechanus)
Worshippers	Ancient Netheril, Politicians, Heretical Lathander worshippers
Favoured Weapon	Scepter of the Eternal Sun (Mace)

Amaunator is the original God of the sun in the Forgotten Realms setting.

He was quite widely worshipped, though was seen as quite a harsh deity, in contrast to the compassionate Lathander. Amaunator's creed was a strict adherence to the Law, to the point that he supposedly only for the portfolio of Time due to a punctuation mistake which said that he would be "Amaunator shall be responsible for all time. The misrepresentations of his followers". So yeah... he's a classic RAW abuser to gain more power.

However, faith in him practically came to a sudden end when the nation of Netheril collapsed along with the near entirety of his worshippers and so he died a slow death of neglect, like some forgotten pensioner in a care home. Amaunator's corpse was said to be a Astral shipping hazard and he was replaced by a new, younger and more vibrant sun god who was more popular with the kids.

However, the story doesn't end there. Radical priests within Lathander's own church believed that Amaunator never died at all, that he simply became a different god to adapt to a different climate.

Though Amaunator was "officially" declared dead and incapable of answering prayers or empowering diving magic, a few people still believed in him. Though they were considered harmless heretics by the mainstream church of the sun god.

However, during the events of the Spellplague (read: 4e) Lathander went "SURPRISE!" And pulled off his rubber mask to reveal that he had been Amaunator all along.

However, rather than assume Lathander's portfolio wholly, Lathander seems to be permitted continued existence as an aspect separate from Amaunator.