In the Rigveda, there is a word revat meaning wealth probably anomalously derived from rA, to grant. By extension it meant rich, plentiful, brilliant, beautiful, and thus its relation to the brilliant sun. In fact, related words like revatI (name of an asterism) meant `the wealthy ones' and `the shining ones' interchangeably when used in plural (often referring to mythical bovines or celestial waters), and revanta in slightly later mythology is the guhyaka (from guh `to hide', a tribe that looked over the divine wealth) son of the sun, or the fifth manu (`thinker', they are the closest equivalent of Adam in Hindu mythology, though also a Rigvedic character, in later mythology a series of 14 patriarchs, always conceptually related to the Sun because of their power).
revanth is a South Indian transliteration into the Roman script of what I wrote as revanta above, but I did not know that this character became that important in common lore. So, I am interested in knowing which part of India was the above meaning from. (I know where Hyderabad is, what I want to know is which ethnicity the meaning given is from.)