Source: Pathfinder 7, Edge of Anarchy, pg(s). 79
Yargtha was a necromancer from the land of Geb, and the historic creator of the first carrion golem. Before his death he was able to pass on the secret of its creation to his many tiefling children. To this day, many tiefling golem-makers prefer creating carrion golems over all others, despite the smell.