Margaret > Meg > Peg > Peggy
Mary > Molly > Polly
The origins of nicknaming "Peggy" for "Margaret" are not entirely clear, but it is believed to have evolved from the rhyming slang convention of replacing a name with a rhyming variant or a similarly sounding nickname. Over time, "Margaret" transformed into "Meg," and then further into "Peg," eventually leading to the nickname "Peggy."
The name Peggy means pearl.Uh... no. Not at all. Wrong. Way off. Not even close.No offense.Peggy means "Margaret."Peggy is a mediaeval diminutive of Margaret, and Margaret means pearl so both the answers above are right. Peggy is arrived at from Meggie. The reason for the change of first consonant is unknown.Actually I am sorry, the person above me couldn't be more wrong. Peggy does not mean Margaret, it can simply be used a a nickname for Margaret. My name is Peggy and it means Pearl. NOT Margaret, I DO NOT have Margaret in my name ANYWHERE. They are just confused that it can be used as a nickname.
Peggy Bates's birth name is Margaret Gaines.
Peggy Seeger's birth name is Margaret Seeger.
Peggy Noonan's birth name is Margaret Noonan.
Peggy Shanor's birth name is Margaret Shanor.
Peggy Webling's birth name is Margaret Webling.
Peggy Doner's birth name is Margaret Lane.
Peggy Flood's birth name is Margaret Flood.
Peggy Cowles's birth name is Margaret Cowles.
Peggy Carlisle's birth name is Margaret Carlisle.
Peggy Ledger's birth name is Margaret Dallas.