Where does “Տիբերիս” come from?

Տիբերիս (Armenian) comes from Ancient Greek Τίβερις, from Latin tiberis — The Tiber River, which flows through Rome.

Ancestry of “Տիբերիս”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	Τίβερις	the river Tiber
2	Latin	tiberis	The Tiber River, which flows through Rome