Where does “raṭṭhapāla” come from?

raṭṭhapāla (Pali) comes from Pali raṭṭha, from Sanskrit राष्ट्र, from Sanskrit धृतराष्ट्र.

Ancestry of “raṭṭhapāla”, step by step

Step	Language	Word	Meaning
1	Pali	raṭṭha	country, reign, kingdom
2	Sanskrit	राष्ट्र	a kingdom , realm, empire, dominion, district,...
3	Sanskrit	धृतराष्ट्र	—

raṭṭhapāla — Etymology, Origin & Word History | Etymology Explorer