Are Mary, Marry, and Merry homonyms?

[RI]

All different.

Mary has the same "a" sound as fairy.

Marry has the same "a" sound as Barry.

Merry doesn't have an "a" for crying out loud.

So Barry doesn't rhyme with fairy?

[RI]

Mary has the same "a" sound as fairy.

Marry has the same "a" sound as Barry.

So, the same?

Fairy has an "i."  So, it's pronounced fair-E, the word fair plus the y.

Barry doesn't have an "i."  

Barry is pronounced bear-E, so they're the same. Having an "i" has very little to do with pronunciation.

[RI]

You pronounce, Barry, Carry, Larry, Marry, Harry the same way?  So, you call someone named Harry, "Hairy?"

The only time I've heard Harry as pronounced as "Hay-ree" or "Hah-ree" or something like that was in Harry Potter. I've never heard an American pronounce it that way unless they were aping that.