Marnie Peters is a Canadian former wheelchair basketball player and accessibility consultant who won gold medals in each of the women's wheelchair basketball tournament at the 2000 Summer Paralympics and the 2002 Women's Wheelchair Basketball World Championship. She was also part of the Ottawa Shooters team that won the 1995 Canadian Wheelchair Basketball League National Championship and took gold at the women's wheelchair basketball competition at the 1999 Parapan American Games.
The main character in the book, The Raging Quiet, by Sheryl Jordan. The book takes place in the Middle Ages; it seems just a little strange to me to think of a medieval Marnie.