Where does “라트비아” come from?

라트비아 (Korean) comes from English Latvia, from Latvian Latvija, from Latvian latvis, from Latvian latuvis, from Latvian Latuva.

Ancestry of “라트비아”, step by step

Step	Language	Word	Meaning
1	English	Latvia	—
2	Latvian	Latvija	Latvia
3	Latvian	latvis	a Latvian, a Lett; a member of the Latvian...
4	Latvian	latuvis	—
5	Latvian	Latuva	—