Despite its brevity, March Moonlight has more than the usual number of characters, mostly due to the many guests at the Lauriers, the pension above Lake Geneva where Miriam stays on her second visit to Switzerland.
| Alfred Roscorla | The younger of the two Roscorla brothers, quiet, red-haired, short, and devout |
| Amabel | Miriam’s friend, now married to Michael Shatov and with a son, David |
| Bennett Brodie | Husband of Miriam’s sister Sarah |
| E. F. Benson | A popular novelist Miriam saw during her stay at the Lauriers in Switzerland |
| Bertha | Servant at the Lauriers i n Switzerland |
| The Bishop | A “prematurely aged mission-priest” recovering from an illness at the Lauriers |
| Miss Cadogan | One of two English sisters staying at the Lauriers. She is deaf. |
| Charles Ducorroy | A former French monk staying as a guest at Dimple Hill |
| Eliza | The housemaid at Dimple Hill |
| Eve Henderson | Miriam’s sister, now deceased |
| Mrs. Gay | Miriam’s landlady at her lodgings in St. John’s Wood late in the book |
| Mr. Godge | The editor of the Friday Review who encourages Miriam to write |
| Gwatkin | A friend of Dr. Stenhouse and a scholar of Arianism |
| Miss Hancock | A relative of Mr. Hancock, Miriam’s former employer, who visits Switzerland |
| Mrs. Harcourt | A woman Miriam met in Oberland who helps finance her stay at the Lauriers |
| Harriet Ducayne | Miriam’s sister, married to Gerald Ducayne, who has at this point moved to the United States |
| Hewar | A writer of “middles” for the Friday Review |
| Hypo Wilson | A writer and former lover of Miriam’s, corresponding to H. G. Wells |
| Jean | A religious Scottish woman Miriam meets and befriends at the Lauriers |
| Jim Davenport | An Englishman staying at the Lauriers |
| Joe Davenport | Jim’s brother, who may be married or engaged to Jean (the text is unclear) |
| Prince Kropotkin | An exiled Russian revolutionary and friend of Olga’s |
| Mr. & Mrs. Linthoff | A Russian revolutionary and friend of Michael Shatov’s and his wife. Miriam first met them in Revolving Lights |
| Miss. Lonsdale | The Englishwoman and former school teacher who runs the Lauriers |
| Marian Brodie | Miriam’s niece, the daughter of Sarah and her husband Gerald |
| Marlboros | Two English boys and their mother, guests at the Lauriers |
| Michael Shatov | The Russian emigre Miriam once had a romantic relationship with, now married to Amabel |
| Mr. Noble | The odd, thin artist Miriam meets in the last chapter, correponding to Alan Odle, the man Dorothy Richardson married |
| Olga Fedorova | A young Russian woman who is attracted to Miriam but later kills herself |
| Pauline | A friend who accompanies Miriam on a visit to Brighton |
| Miss Pelham | A guest at the Lauriers |
| Miss Poncet | A guest at the Lauriers |
| Rachel Roscorla | The middle-aged sister who manages the house at Dimple Hill |
| Richard Roscorla | The older brother and manager of the farm at Dimple Hill |
| Rosabel | A beautiful young woman staying at the Lauriers |
| Mrs. Roscorla | The mother of Alfred, Rachel, and Richard |
| Sarah Brodie | Miriam’s eldest sister, married to Bennett Brodie |
| Miss Sclater | A missionary in training visiting Switzerland |
| Dr Stenhouse | A Harley Street surgeon and acquaintance of Miriam’s |
| Stepniak | Another Russian revolutionary in exile, friend of Olga’s |
| H. G. Wells | The real novelist, likely mentioned to dissuade readers from assuming that Hypo is his fictional counterpart |
| William Brodie | Miriam’s nephew, son of Sarah and Bennett |
The quote on 575 from the Longfellow poem The Legend Beautiful. It’s here https://drive.google.com/file/d/1Du55k2iYNoqOpkHITBJGUtJW6utVV3kg/view?usp=drivesdk