Translation: →French: Link et Zelda ne sont de la même famille que dans ta tête. English: Link and Zelda are from the same family only in your mind.
Actually I think they're siblings in Zelda II (and if I recall Zelda II is a direct sequel to Zelda I).
→ I don't remember that being mentioned. Plus they kiss at the end, so... however, it is implied that they are in a Link the the Past, by Link's uncle speech before he dies.
why do they kiss at the end of zelda II!? lol. i doubt miyamoto had that in his vision... still ive always wondered.... in every zelda game: theres a different link. of different generations. like, a looonng family history. JUST WHO DOES EACH LINK MARRY TO REPRODUCE?! that question boggles my mind.... ehhh... minor gripe i guess. still, link is awesome in this game! (isnt every character in this game?!)
The Zeldas are all descendants of each other, but I don't think the Links necessarily are. It's entirely possible none of the Links are related to each other, or to any of the Zeldas.