Where does “Dervishi” come from?

Dervishi (Albanian) comes from Albanian dervish, from Ottoman Turkish درویش, from Classical Persian درویش, from Persian دریوش, from Persian درغوش, from Middle Persian dlgwš, from Proto-Iranian drigu-.

Ancestry of “Dervishi”, step by step

Step	Language	Word	Meaning
1	Albanian	dervish	dervish
2	Ottoman Turkish	درویش	Dervish, Sufi
3	Classical Persian	درویش	—
4	Persian	دریوش	—
5	Persian	درغوش	—
6	Middle Persian	dlgwš	poor, needy; one who lives in holy indigence
7	Proto-Iranian	drigu-	—

Every word from Proto-Iranian drigu- →Every word from Middle Persian dlgwš →Every word from Persian درغوش →