Where does “Taras” come from?

Taras (English) comes from Ukrainian Тара́с, from Ancient Greek Ταράσιος, from Ancient Greek ταράσσω, from Proto-Indo-European dʰreh₂gʰ- — to irritate; rough.

Ancestry of “Taras”, step by step

Step	Language	Word	Meaning
1	Ukrainian	Тара́с	—
2	Ancient Greek	Ταράσιος	—
3	Ancient Greek	ταράσσω	I disturb; I agitate
4	Proto-Indo-European	dʰreh₂gʰ-	to irritate; rough

Every word from Proto-Indo-European dʰreh₂gʰ- →Every word from Ancient Greek ταράσσω →Every word from Ancient Greek Ταράσιος →