Name	Used by
M.L. Cavendish	L.M. Montgomery
M.M.	Matilda Maranda Crawford and 2 more.
M.R.J.	M.R. Johnson
M.S.G.	M.A. Bonnell
Ma Murray	Margaret Murray
Mabel Dorothy Ruth Home	Ruth Home
Mrs. Mac	Violet Clara McNaughton
Annie Caroline MacDonald	Caroline MacDonald
Dr. Agnes Mary Foley MacDonald	Agnes Foley MacDonald
Mrs. Andrew MacDonald	Elizabeth Lee MacDonald
Mrs. Angus Lewis MacDonald	Agnes Foley MacDonald
Mrs. Colin MacDonald	Zillah Katherine MacDonald
Mrs. Edmund MacDonald	Dora Whitefield
Mrs. Ewan MacDonald	L.M. Montgomery
Mrs. Grant MacDonald	Mrs. Grant MacDonald
Mrs. James Wilson MacDonald	Ella Albertina Jennings
Mrs. S.A.R. MacDonald	Elizabeth Roberts MacDonald
Mrs. Vincent MacDonald	Vera Richards MacDonald
Mrs. Logie MacDonnell	(unknown)
Mrs. MacDougall	(unknown)
Mrs. R. E. MacDougall	Ethel MacDougall
Mrs. James Henry MacGill	Helen Gregory MacGill
Mrs. George MacInnes
Miss MacIntyre	Miss MacIntyre
Mrs. H.M. MacKay	LiIlian Norton MacKay
Mrs. L.A. MacKay	Constance MacKay
Mrs. Andrew MacKellar	Phoebe Erskine MacKellar
Mrs. Ogilvie MacKenzie-Kerr	Joan Walker
Mrs. John Joseph MacKenzie	Kathleen Cuffe MacKenzie
Mrs. Murdoch Archibald MacKinnon	Lilian Vaux MacKinnon
Margaret Sarah MacLean	Margaret MacLean
Mrs. Hugh MacLennan	Dorothy Duncan
Mrs. J. MacLennan	(unknown)
Ada MacLeod	Ada Ramsay
Mrs. Alexander MacLeod	Elizabeth Susan MacLeod and 2 more.
Mrs. Neil MacLeod	Ada MacLeod and 2 more.
Mrs. Louis B. Macmillan	May Carroll and 2 more.
Dr. Helen MacMurchy	Helen MacMurchy
Mrs. Alexander Wellesley MacNab	Mary Gwladys Griffiths
Mrs. William Macnab	Mary Ellen MacNab
Mrs. Harley MacNair	Florence Wheelock Ayscough
Mrs. Daniel MacPherson	Charlotte Holt Gethings MacPherson
Letitia MacTavish	Letitia Hargrave
Isabella MacVane	Isabel Skelton
Madame Merri	Ellye Howell Glover
Madame Skelton	Henrietta Skelton
Madeleine Blair	Madeleine Blair
Madge Merton	Elmira Elliott Atkinson
Maeve Carrig	Martha Craig
Mrs. M.L. Magee	(unknown)