Where does “ఈశానుడు” come from?

ఈశానుడు (Telugu) comes from Sanskrit ईशान — owning, possessing; rich, wealthy; ruling.

Ancestry of “ఈశానుడు”, step by step

Step	Language	Word	Meaning
1	Sanskrit	ईशान	owning, possessing; rich, wealthy; ruling

ఈశానుడు — Etymology, Origin & Word History | Etymology Explorer