| | | | Part 1 |
| 1 | Lady | St. Helier | Clementine's benefactress. |
| | Clementine | Hozier | Narrator and Protagonist. Aka: Clemmie, Cat. |
| | Mary | | St. Helier's housemaid. |
| | Nellie | | Clementine's sister. |
| 2 | Lena | Whyte | Clementine's cousin. A dressmaker. |
| | Kitty | | Clementine's older sister. |
| | Camille | Pissaro | An artist. |
| | Winston | Churchill | Clementine's husband. Aka: Pug. |
| | Bran | Stoker | The Dracula author. |
| | Beatrice | Harris | Clementine's head mistress at Berkhamsted. |
| | Bill | | Nellie's twin. Clementine's brother. |
| | Sidney | Cornwallis-Peel | Robert's grandson. |
| | Robert | Peel | A former prime minister. |
| | Lionel | Earle | One of Clementine's fiances. |
| | Lady | Blanche | Clementine's grandmother. |
| 3 | Duke | Of Marlborough | Winston's cousin. Aka: Sunny, Earl of Sunderland. |
| | Henry | Hozier | Clementine's father. |
| | Lady | Churchill | Winston's mother. Aka: Jennie Jerome. |
| | Gwendeline | Bertie | Jack's new wife. Aka: Goonie. |
| | King | Edward | The current king. |
| | Kaiser | Wilhelm | The current German emperor. |
| | Capability | Brown | An English gardener and landscape architect. |
| 4 | Clare | Frewen | Winston's cousin. One of Clementine's bridesmaids. |
| | Venetia | Stanley | Clementine's cousin One of Clementine's bridesmaids. |
| | Horatia | Seymour | Clementine's friend. |
| | William | Gladstone | The prime minister. |
| | Violet | Asquith | Venetia's best friend. Herbet's daughter. |
| | Herbert Henry | Asquith | The new liberal prime minister. |
| | David Lloyd | George | The chancellor of the exchequer. Winston's predecessor. |
| | George | Cornwallis-West | Jennie's new husband. |
| | Algernon | Bertram Freeman-Mitford | The first baron
Redesdale. |
| | Hugh | Cecil | A baron. |
| | Bishop | Welldon | The marriage officiant. |
| | | | Part 2 |
| 6 | Diana | Churchill | Clemmie and Winston's daughter. |
| 7 | Randolph | Churchill | Clemmie and Winston's son. Aka: Chumbolly. |
| 8 | Helen | | Clemmie's personal maid. |
| | Stewart | | One of Winston's servants. |
| 9 | Grandmother | Stanley | Clemmie's grandmother. |
| | Margot | | Henry's wife. |
| 10 | Lord | Pirrie | Clemmie and Winston's hosts. |
| | F.E | Smith | Winston's friend. |
| 12 | Kitchener | | The field marshal. |
| 13 | Franz | Ferdinand | The archduke. Murdered. |
| 14 | George | Callaghan | The admiral. |
| | Sarah | Churchill | Clemmie and Winston's daughter. |
| 15 | Reginald | McKenna | The home secretary. |
| | Earl | Kitchener | The secretary of state for war. |
| | Richard | Valdane | The lord chancellor viscount. |
| | Walter | Runciman | The president of the board of trade. |
| 16 | De | Robeck | The new vice admiral. |
| | Andrew | Bonar-Law | The conservative leader. |
| | Edwin | Montagu | Venetia's fiancé. The junior minister. |
| 17 | Bertram | Romily | Nellie's fiancé. |
| | John | Lavery | Clemmie's friend. A painter. |
| | Hazel | Lavery | John's wife. |
| | Maurice | Bonham-Carter | Violet's fiancé. |
| | | | Part 3 |
| 19 | Dr. | Gomez | Winston's doctor. |
| | Lawrence | Bell | A well-known archaeologist. |
| | Gertrude | Bell | A key political adviser. |
| | Archie | Sinclair | Winston's private secretary. |
| | Lawrence | | The colonel. |
| | Marigold | Churchill | Clemmie and Winston's daughter. |
| | Bessie | | Clemmie's maid. |
| 20 | Mrs. | Burden | Clemmie's friend. |
| | Rose | | Clemmie's new French nanny. |
| | Thomas | Walden | Winston's manservant. |
| 22 | Mary | Churchill | Clemmie and Winston's daughter. Aka: Baby Bud. |
| | Maryott | Whyte | Clemmie's 1st cousin. Aka: Moppet. |
| | Lady | Maude | Maryott's mother. Clemmie's aunt. |
| | Grace | | One of Clemmie's servants. |
| | Johnny | | Jack and Goonie's son. |
| | Peregrine | | Jack and Goonie's son. |
| | Clarissa | | Jack and Goonie's daughter. |
| | Giles | | Nellie and Bertram's son. |
| | Esmond | | Nellie and Bertram's son. |
| 23 | Pakenham-Walsh | | The lieutenant colonel. |
| | Ernst | Hanfstaengl | A fine arts publishing house owner. Putzi's father. |
| 24 | Lord | Moyne | The financial secretary to the treasury. |
| | Vera | Broughton | Lord Moyne's mistress. |
| | Komodo | Dragon | The giant lizard. |
| 25 | Terence | Philip | Knoedler's director of London branch. |
| | Lee | Guinness | Moyne's cousin. |
| | Posy | Guinness | Lee's wife. |
| 26 | Edward | VIII | The current King of the U.K. |
| | Frederick | Lindemann | The professor from Oxford University that Winston recruited. |
| | Ralph | Wigram | One of the men that Winston recruited. |
| | Chamberlain | | A prime minister. |
| | Baldwin | | A prime minister. |
| | Adolf | Hitler | The Nazi leader. |
| | Mussolini | | The leader of National Fascist Party. |
| | Judy | | Venetia's daughter. |
| | Duncan | Sandys | Diana's husband. |
| | Vic | Oliver | An Austrian-born actor. |
| | Sarah | Oliver | Vic's wife. |
| | Anthony | Eden | One of the members of the parliament. |
| | Alfred | Duff | One of the members of the parliament. |
| | Cooper | | One of the members of the parliament. |
| | Bob | Boothby | One of the members of the parliament. |
| | Brendan | Bracken | One of the members of the parliament. |
| 29 | Duff | | The lord admiral. |
| | Julian | | Diana's son. |
| | Edwina | | Diana's daughter. |
| | Pamela | Digby | The eldest daughter of Lord Digby. Clemmie's daughter-in-law. |
| 30 | Miss | Hall | One of Winston's housemaids. |
| | Miss | Watson | One of Winston's housemaids. |
| | Jock | Colville | Winston's private secretary. |
| 31 | Mrs. | Landemare | Clemmie's cook. |
| 32 | Tommy | Thompson | Winston's bodyguard. |
| 33 | May | Tennant | The woman from Red Cross. |
| | Malcolm | MacDonald | The minister of health |
| 34 | Mr. | Peacock | Clemmie's instructor. |
| 35 | Jessica | Mitford | Esmond's cousin. |
| | De | Gaulle | The France general. |
| 37 | President | Roosevelt | The current U.S. President. |
| | Harry | Hopkins | The U.S. secretary of commerce. |
| 38 | Joseph | Kennedy Sr. | The American ambassador. |
| | Gil | Winant | A former republican governor. |
| | Averell | Harriman | Clemmie's new guest. |
| 39 | Stanley | Lief | Clemmie's doctor. |
| 40 | Kathleen | Harriman | Averell's daughter. |
| | Pug | Ismay | Winston's chief military assistant. |
| 41 | Eleanor | Roosevelt | The U.S. first lady. |
| | Anna | Roosevelt | Eleanor's eldest daughter. |
| | Alan | Brooke | Chief of the imperial general staff. |
| | Henry | Morgenthau Jr. | Secretary of the U.S. Treasury. |
| 42 | Joseph | Stalin | The Russian leader. |
| | W.L | Mackenzie-King | The Liberal prime minister of Canada. |
| 43 | Lord | Moran | Winston's doctor. |
| | Dwight | Eisenhower | An American general. |
| 45 | Mabel | Johnson | The secretary to the aid to Russia fund. |
| | Ivan | Maisky | The former Russian Ambassador. |
| | Paulina | Molotov | Ivan's wife. |
| | Mrs. | Kislova | Clemmie's interpreter. |
