From Connecticut and merry and Mary are the same but marry is totally different.
Did the Clampets on Beverly Hillbillies get their family fed or shed? I never could hear it well enough.
Many in RI and some parts of Ma. Idea is idear. Adding the r to words and removing it from others. Lol.
Personally I’ve had a few instances of mentioning the libary vs li-bra-ry.
My wife will look at me and ask if I plan on talking to the Libarian?
Come and listen to my story 'bout a man named Jed A poor mountaineer, barely kept his family fed,
DH reminded me today (by mispronouncing it again) a study carrel. Its CArell (like Carol, the girls name). DH mispronounces it with the emphasis on the second syllable. Like the actor Steve Carrell. Drives me buggy.
Another Midwesterner (Michigan). Absolutely no difference between that trio, also Barry and berry rhyme with airy. Can’t remember ever hearing any of them pronounced differently.
yeah- that’s what my sister said back then. Shows how lousy my ear is.
I’ve lived the majority of my life in southcentral PA but have also lived in southwestern Ohio, upstate New York, and eastern Washington state. I pronounce Mary and merry the same and marry differently. PA has a New Berlin (BER-lin) and Ephrata (EFF-ra-ta). In WA state, Ephrata was pronounced ee-FRAY-ta. Ohio has New Vienna (Vy-en-na), fairly close to Sabina (long i).
When I was growing up (in Philly) Dougherty was pronounced DOCK-er-ty. Moved to California and they pronounced it DOUGH-er-ty. Kinda drove me bonkers.
Had a HS classmate Daugherty pronounced door-tee.
I am driving myself mad pronouncing Mary, merry, and Marry in my head and not being able to come up with any reasonable distinction. If you pronounce marry differently, what does it sound like? Aaaahhhh!!
Marry rhymes with carry. Merry and Mary rhyme with airy.
To me, carry and airy rhyme.
When I was younger and learning English in grammar school, it was explained that: Marry rhymes with carry; merry rhymes with cherry; Mary rhymes with fairy. Now, if some permutation of carry/cherry/fairy sound the same, I don’t know what to tell you. 
Cherry and fairy rhyme with each other. Try marry using the same a sound as cat, mat or at.
They definitely do not rhyme to me. It’s more like “Cheer-ee” and “Fair-ee” to me. Very distinct.
Two more things I say incorrectly (at least according to H, who grew up 30 minutes away from me): I pronounce “mayor” as the single syllable “mare” and “mayonnaise “ as just two syllables, “man-aze”.
I’ve heard it described as MARE-ee, MEH-ree, and MA-ree (like MAT, without the T), respectively, but if I try to say them that way, I feel like I’m mocking someone’s Boston/NY/Northeast accent. They’re all MARE-ee to me. Speaking or hearing.
Always learned and observed that an R after a vowel changes the “rules” for how it’s pronounced - it’s no longer long or short, but its own special case.
“if I try to say them that way, I feel like I’m mocking someone’s Boston/NY/Northeast accent. They’re all MARE-ee to me”
Raised and live in New England and I pronounce them all the same as well.
Mary, cherry, fairy, carry, Carrie, Kerry, merry, marry, airy, Larry, Barry, berry, dairy, tarry, wary, Jerry, hairy, nary, and very are all the same vowel sound. Quarry is different, kwory.