Domains: Death, transition, ancestral memory.
Era of ascension: Golden Age of Man (~190,000 years ago). Cohort: dead. Died: God War & Long Winter (~75,000 years ago), when the mass death of the Long Winter overwhelmed his capacity for ordered transition and his surviving followers abandoned his rites.
Worshipped by: The burial traditions of Golden Age civilizations — priests who oversaw the dead, those who maintained ancestor shrines, communities that organized their lives around the obligation to the departed. No living culture maintains his worship. (The worships edge is authored downstream on the worshipper, not here.)
Morvith governed the passage between living and dead, the crossing itself rather than the destination. His theology was detailed: elaborate burial rites, proper naming of the dead, specific prayers at specific intervals after death. When the Long Winter killed in numbers that made proper burial impossible, the rites collapsed and Morvith's following shattered in a generation.