Where does “cofăieș” come from?

cofăieș (Romanian) comes from Romanian cofei, from Romanian -ei, from Latin illaei, from Latin illī, from Latin ille, from Latin olle, from Proto-Italic *olnos — that.

Ancestry of “cofăieș”, step by step

Step	Language	Word	Meaning
1	Romanian	cofei	barrel, bucket
2	Romanian	-ei	the
3	Latin	illaei	her dative singular feminine
4	Latin	illī	found in
5	Latin	ille	that; those; "; demonstrative pronoun "; that...
6	Latin	olle	Archaic form of ille
7	Proto-Italic	*olnos	that

Every word from Proto-Italic *olnos →Every word from Latin olle →Every word from Latin ille →