Marge, Margie, Meg.
Famous people named Margaery:
None with this particular spelling - at least not outside the realm of fiction.
This spelling variation is literary, originating with George R. R. Martin's A Song of Ice and Fire series and its character Margaery Tyrell.
160+ Sweet Old Lady Names Rooted In Tradition, 110+ Unique Middle Names For Your One-Of-A-Kind Baby Girl, Girl Names That End In “Y”, Going Medieval: Baby Names From The Middle Ages, Marvelous M Names For Baby Girls, Badass Baby Girl Names Inspired By “Game Of Thrones”, Perfect 3-Syllable Girl Names,