Where does “Elba” come from?

Elba (Polish) comes from Italian Elba, from Old High German Elba, from Proto-West Germanic albi, from Proto-Germanic albī, from Latin Albis, from Latin Albeus.

Ancestry of “Elba”, step by step

Step	Language	Word	Meaning
1	Italian	Elba	—
2	Old High German	Elba	—
3	Proto-West Germanic	albi	elf, fairy
4	Proto-Germanic	albī	river
5	Latin	Albis	—
6	Latin	Albeus	—

Every word from Latin Albeus →Every word from Proto-Germanic albī →Every word from Latin Albis →