Where does “Făgărășan” come from?

Făgărășan (Romanian) comes from Romanian Făgăraș, from Romanian -ar, from Latin -ārius, from Proto-Italic *-āzios — Forms relational adjectives to nouns (and rarely numerals).

Ancestry of “Făgărășan”, step by step

Step	Language	Word	Meaning
1	Romanian	Făgăraș	—
2	Romanian	-ar	-er
3	Latin	-ārius	er
4	Proto-Italic	*-āzios	Forms relational adjectives to nouns (and rarely numerals)

Every word from Proto-Italic *-āzios →Every word from Latin -ārius →Every word from Romanian -ar →