What is a Pu Som Fao Sap?

Background

Pu Som Fao Sap (Grandfather Ginseng) is a guardian spirit who guards valuable treasures or treasures of national importance and supposedly looks like a venerable old man.

Various newspaper reports from the twentieth century report on thefts (e.g. 1957 AD in the Sombat dungeon of Wat Ratchaburana), according to which the thieves either voluntarily surrendered or suffered other damage, so that large parts of the stolen goods ultimately found their way back. Allegedly, a Pu Som Fao Sap is said to have worked in these and other events.