Mary Esther MacGregor | |
|---|---|
 MacGregor in 1922 | |
| Born | August 27, 1872 Rugby, Oro Township, Simcoe, Ontario |
| Died | February 10, 1961 (aged 88) Owen Sound, Ontario |
| Pen name | Marian Keith |
| Occupation | Writer (novelist) |
| Nationality | Canadian |
| Period | 20th century |
| Genre | History, fiction |
Mary Esther Miller MacGregor, (August 27, 1872 – February 10, 1961) also known as Marian Keith, was a Canadian author of fiction.