No they aren't but they are both reincarnated throughout the series as other children ( convienently named the same thing).
YES
No, Zelda is older. Yearwise, yes, although they probably have different birthdays.
The creator of Link from Legend of Zelda would be Shigeru Miyamoto the same creator of Mario and other Nintendo characters.
Link lives in Hyruleamunggagunggogar(Hyrule or New Augusta), Albany, Hyland. That is where Zelda lives too 'cause Link and Zelda are married and they live in the same house.
will link and Zelda what? No. The answer is Chuck Norris.
I'm pretty sure she's Twelve. Zelda is always the same age as Link,and she is Zelda so...
No,link is the main protagonist and the character in the green hat and tunic that you ply in the games, and zelda is the princess that you usually have to save from the main antagonist Ganondorf.
Link and Zelda live in Hyrule(New Richmond), New Augusta, Albany, Hyland. They live in the same house 'cause they're married.
No. A Link to the Past is the third installment of the Adventures of Zelda. The first is simply The Adventures of Zelda. The second is Zelda II: The Adventures of Link.
Zelda and link ,No, they aren't siblings. but link has a little sister in windwaker
The Zelda games are not horribly consistent in terms of backstory, even though they keep using the same character names. The precise relation between Link and Zelda varies depending on which game you're talking about.
In The Legend of Zelda: Ocarina of Time, Link finds out that Zelda is Sheik, but only towards the very end of the game does Zelda reveal herself to Link.