Margaric acid C17H34O2 from Gk margar(on) = pearl haspearlescent crystals. It is a precursor of margarine.
I think there is a strong connection between pearl andits ivory color. Aha.
MaRe = sea + Greek GaLiTe = "milky white", hence ivory (color)
Now, compare (mar)GaLiTe and
Galatea (gal uh tee'uh) n.the woman brought to life by Aphrodite from the ivory statuecarved by Pygmalion.
Pygmalion (pig may'lee uhn, -mayl'yuhn) n.(in classical myth) a sculptor who fell in love with Galatea,the ivory statue of a woman that he had carved.
Compare Pinnochio (another carving brought to life) andHebrew P'NiNaH = pearl.
So, maybe,Margaret/MarGaLiTe --> GaLiTe --> PyGmalion --> Peggy