Where does “Lupeni” come from?

Lupeni (English) comes from Romanian Lupeni, from Hungarian -eni, from Hungarian -é-, from Hungarian -d, from Middle Welsh -nt — 3rd person plural verb ending.

Ancestry of “Lupeni”, step by step

Step	Language	Word	Meaning
1	Romanian	Lupeni	—
2	Hungarian	-eni	Used to form the infinitive; "For the other...
3	Hungarian	-é-	—
4	Hungarian	-d	your; Used in the second-person singular definite...
5	Middle Welsh	-nt	3rd person plural verb ending

Every word from Middle Welsh -nt →