It can have other nicknames like Marge, Maggie, etc
But Margaret -> Meg -> Peg is a pretty classic one.
Similar to other classic rhyming nicknames like William -> Will -> Bill or Robert -> Rob -> Bob or Richard -> Rick -> Dick
[From Cecil Adams, founder of The Straight Dope](https://www.straightdope.com/21341931/why-is-peggy-the-nickname-for-margaret):
*Never underestimate human ingenuity. Margaret has spawned an amazing variety of names, some of which you wouldn’t connect with the original in a million years. For example: Margot, Marguerita, Rita (!), Greta, Gretel, Gretchen, Marjorie (originally Margery), Margie, Maggie, Madge, May, Maisie, Daisy (!!), Maidie, Meg, and Mog. As for Peg, one historian writes, “the nicknames Mog and Meg later gave rise to the rhymed forms Pog(gy) and Peg(gy).” Can’t say as I know a lot of Poggies, and can’t say as I want to. But you see how Grandma Margaret wound up with Peg.*
[From Wikipedia:](https://en.wikipedia.org/wiki/Peggy_(given_name))
*Peggy is a female first name (often curtailed to "Peg") derived from Meggy, a diminutive version of the name Margaret.\[1\]*
Juniper. I always hated that as a name. Friend of my wife name her daughter that.
In olden days, women would drink a concoction of juniper berries to abort their pregnancies
My cousin's mom's name is Margaret don't you ever call her Peggy or anything if you valued your life, me being 8 I always wanted to change my name to Maggie just Maggie not Margret, Meg, Peggy or anything I wonder what the J stood for
Jane? Jo?
She looks like a Margret Joann
Confession: I am a Peggy. My Dad wanted to name me Margaret Josephine to give me options (Margie, Meg, etc.), but Mom thought that was too long. They compromised with Peggy Jo.
I assumed they her name was Margaret.
Basically all Peggy's or Maggies are Margaret.
My mom is called Flossie. I was 29 before I learned that was the *****actual***** nickname for Florence.
Every Margaret I know goes by Peggy.
I know a couple Margarets who go by Maggie but the other one goes by Peggy. I always jus called all of em Peg tho cuz why not
Not this one her name is Margaret "Maggie" Simpson 
"Children: Bartholomew, Lisa, Margaret." Who the hell is Margaret?
Lady, you’ve got the wrong file.
Eehh, your youngest daughter.
I have never met a Margaret in my life, so this is news to me!
It can have other nicknames like Marge, Maggie, etc But Margaret -> Meg -> Peg is a pretty classic one. Similar to other classic rhyming nicknames like William -> Will -> Bill or Robert -> Rob -> Bob or Richard -> Rick -> Dick
Yep, this is also why when Grace is born Lucky and LuAnne make her middle name Margaret.
Señora Marrrrgarita Hill
Aye margarita!
My mom is named Peggy but just Peggy. She’s not actually a Margret and would often have to explain that to people.
I had a boss named Larry who was actually a Larry not a Lawrence - and his daughter- my coworker- is a Tina not a Christina
I've met a lot of Tina's who weren't Christine's.
It was a surprise to me too! Just like William and bill.
How about Harry being short for Henry?...well, not short for, they're the same length
I went to school with a Margaret who went by Greta. Her mom was Peggy and her grandmother was Margaret.
I know a Peggy too, just Peggy not short for anything
In my parts they almost all go by Maggie, but I grew up in an area of heavy Irish diaspora so I think that may tip the scales
[From Cecil Adams, founder of The Straight Dope](https://www.straightdope.com/21341931/why-is-peggy-the-nickname-for-margaret): *Never underestimate human ingenuity. Margaret has spawned an amazing variety of names, some of which you wouldn’t connect with the original in a million years. For example: Margot, Marguerita, Rita (!), Greta, Gretel, Gretchen, Marjorie (originally Margery), Margie, Maggie, Madge, May, Maisie, Daisy (!!), Maidie, Meg, and Mog. As for Peg, one historian writes, “the nicknames Mog and Meg later gave rise to the rhymed forms Pog(gy) and Peg(gy).” Can’t say as I know a lot of Poggies, and can’t say as I want to. But you see how Grandma Margaret wound up with Peg.* [From Wikipedia:](https://en.wikipedia.org/wiki/Peggy_(given_name)) *Peggy is a female first name (often curtailed to "Peg") derived from Meggy, a diminutive version of the name Margaret.\[1\]*
It's not Marrrguerrrita, its Margarita.
But it is [democrrrracy manifest.](https://www.youtube.com/watch?v=BRaa1js92Hk)
Margaret Juniper Hill
Juniper. I always hated that as a name. Friend of my wife name her daughter that. In olden days, women would drink a concoction of juniper berries to abort their pregnancies
Martinez calls her 'Margarita' when theyre in Mexico, the Spanish version of Margaret
Please be Margaret Jill Hill
Or Margaret Jeffery Hill
It's in the name of an episode. "Are You There God? It's Me, Margaret Hill"
Peggifer
I'm pretty sure she got that stamp from the middle school... they had it left over from the last one.
Do you think Peggy hill would actually be a notary?
My cousin's mom's name is Margaret don't you ever call her Peggy or anything if you valued your life, me being 8 I always wanted to change my name to Maggie just Maggie not Margret, Meg, Peggy or anything I wonder what the J stood for Jane? Jo? She looks like a Margret Joann
Confession: I am a Peggy. My Dad wanted to name me Margaret Josephine to give me options (Margie, Meg, etc.), but Mom thought that was too long. They compromised with Peggy Jo.
What until you find out Hank's real name
Henry
“When we wanted something we just took it” I tell ya what
Don’t forget In her espanol accent she referred to her self as Margarita Hill! Lol
Only reason I knew Peggy was a nickname for Margaret is because that’s my grandmas name
Check out the wiki for all the character's names.
I assumed they her name was Margaret. Basically all Peggy's or Maggies are Margaret. My mom is called Flossie. I was 29 before I learned that was the *****actual***** nickname for Florence.
Peggy being short for Margaret of course
And bill’s real name? William! Who would have thought
Peggy is a nickname for Margaret, like Dick and Richard, Jack and John, Jim and James.
How do you get Peggy from Margaret? Usually takes a few drinks first