A talented developer named Infidelity has ported Zelda II: The Adventure of Link from its original version to Nintendo's 16-bit platform.
Port status:
Infidelity invites players to try out this adaptation, emphasizing that it is fully playable from start to end. He also advises them to review the included README file which details all known issues needing further refinement.
I asked because years ago, I saw a ROM for NES that took the original Japanese version and retranslated everything to English, fixing a lot of broken clues and storylines. I haven't been able to find it again.
That looks like it! Thanks!! I honestly don't remember enough of the one I saw to be sure if that was the same project, but it is definitely the same concept and looks like the creator put a lot of work into it to make it perfect.