Definition of "Maggie"

Maggie. Never in her life had she heard her mother called Maggie. It was a name from her youth, that dead time Jerene had never been allowed to talk about [- - -]. Her mother was Margaret now.

1986, David Leavitt, The Lost Language of Cranes, Houghton Mifflin, published 1997, page 127

I could tell that some of the guests were confused by the name of Maggie―no-one had called her by that clunky, unfashionable name in years―

2004, Joanne Harris, Jigs & Reels, Doubleday, page 81