One of Samantha's school friends. She's a friend, and a very honest one.
The manager of the Imperial Excelsior hotel in Paris, France. He is only seen in Danger in Paris.
A doctor at Mount Bedford. The protagonist and Samantha visit his office in The Lilac Tunnel: My Journey with Samantha; he examines the bump on the protagonist's head.
The owner of Bertram's Book Shop. He's only seen in The Stolen Sapphire.
The head of a settlement house in New York City. She calls Nellie 'Miss Nellie O'Malley-All-Mended" because of the way she was able to dissemble and reassemble things to repair them. She knew Nellie before she moved in with the Edwards and is pleased to see that Nellie's life has improved. She is a brisk and bossy, but cheerful and warm. She is rarely found in her office and can be found in various places all over the settlement house and enjoys a variety of classes (she is first located in a singing class). Her parents died when she was young and she went to Clark School to learn to be a teacher. She comes from the same Irish background as Nellie and gives her an Irish coin in payment for fixing her clock to remind her of her family's past.
When she first meets Cornelia and Samantha, she greets them warmly. She enjoys Cornelia's help at the settlement house. When Uncle Mike comes to the house trying to seek information about Nellie, she gives him a piece of her mind before sending him off. She and Nellie share Irish tea and Nellie first confesses about Uncle Mike to her and her unhappiness at school. She tells Nellie that she has to make a decision on her own about where to take her life, regardless of Uncle Mike, and to choose the future she wants. She inadvertently gives Nellie information about Clark School and prompts her to write the letter. Later she helps Cornelia locate a school that Nellie would prefer.
She both inspires Nellie to become a teacher (and takes it as a great compliment) and gives her sound advice about taking control of her life regardless of her home life.
The twelve year old daughter of Mr. and Mrs. Billingsley. She acts very snobbish towards Nellie O'Malley because of her adoption.
Mr. and Mrs. Billingsley
A wealthy couple seen traveling with their daughter on board the R.M.S. Queen Caroline in The Stolen Sapphire.
An employee at Ravenscourt. In The Curse of Ravenscourt, she serves as the cook for Samantha's and Nellie's family.
The owner of Mr. Carruthers's Candy Shop.
A friend of Mary Edwards aboard the S.S. Londonia, who shows others how to make Japanese origami cranes.
A woman who works as a maid at the Imperial Excelsior hotel.
The headmistress at Miss Crampton's Academy for Girls. She is very serious about exercise and every day at one o'clock in Samantha's class, she leads the girls in exercises.
An Irish maid employed at Ravenscourt. In The Curse of Ravenscourt, she serves as the maid for Samantha's and Nellie's family.
A woman who works as a maid at Lockston Castle.
A woman who works at an orphanage in Mount Bedford. She's seen transporting two young orphans to the city in The Lilac Tunnel: My Journey with Samantha.
An elderly woman and a maid of Mary Edward's. She's seen accompanying Mrs. Edwards as she traveled to Europe with Archibald Beemis, Samantha and Nellie in early 1907.
Margurite's mother. She teaches French at Lessing's Boys School and is widowed.
A French girl who attends Samantha's school. She is looked down upon for being lower-middle-class. Marguerite is a skilled ballerina and performs at a talent show in Samantha's Special Talent.
A snobby well-to-do girl. She is first seen in Samantha Learns a Lesson in class, and then later looking down on Samantha playing with Nellie and says that she was raised to be better than to play with servants. She makes it into the speaking contest along with Samantha.
Mrs. Eddleton is the mother of Edith Eddleton. She is described as having a high, shrill voice and looks down on Nellie for being a servant and that Nellie and Samantha shouldn't be friends. In Samantha and the Missing Pearls, she accuses Nellie of stealing the lost pearls.
The late husband of Mary Edwards and father of Lydia and Gardner. He died before the start of the series; there is no indication he was alive when Samantha's parents died or that he ever helped raise Samantha. His grandson William Samuel Edwards is named after him.
William Samuel Edwards
William Samuel Edwards is the infant son of Gardner Edwards and Cornelia Edwards. Cornelia informs Samantha, Nellie, Bridget, and Jenny that she is pregnant at the end of The Curse of Ravenscourt. William is born before the events of The Cry of the Loon. Cornelia and Gardner named him after Samantha's grandfather William and Samantha (however, since Samantha is a girl's name, it was changed to Samuel). Samantha thinks the name is large for such a small baby. Samantha asked Gardner if he was going to call the baby Sam since that was his nickname for her; Gard assures her that the baby will probably be called William.
For a birthday gift to Grandmary, Cornelia and Gardner give a picture of the three of them together.
The owner of Enderby Towers and Horace Raven's business rival. He pays Mr. Winthrop to scare residents away from Ravenscourt with accidents in The Curse of Ravenscourt.
A woman hired as a French tutor for Samantha and Nellie in The Stolen Sapphire. She also accompanies the girls on the R.M.S. Queen Caroline.
The tutor of Henry and Ian Stallsworth. He only appears in Clue in the Castle Tower.
Sir Charles' goddaughter and the daughter of his cousin, the Earl of Norwood. She aspires to work for a newspaper, despite the disapproval from her father. She only appears in Clue in the Castle Tower.
The matron of Cold Rock House. She is a portly woman who believes orphans should learn to care for themselves and respect their betters. She takes away the nice things that Cornelia and Samantha give Nellie and decides to put Nellie on the orphan train which prompts their running away.
In the film she is given a more integral part. She is much more harsh and cold but sweet faced to the rich donators of the orphanage. She is actually taking money from the donations for personal use; when Nellie and Samantha see this and run, she accuses them of theft and that Samantha has stolen her "dear girls". She comes to the Edwards house and tries to accuse Samantha but is sent away by Gertrude. She is later removed as the head of Cold Rock House when her cruelty and theft are revealed.
Gertrude is the maid to Gardner and Cornelia Edwards. She discovers Nellie O'Malley and her sisters in the attic and reports this to the Edwards. She seems put upon that she has to be the servants to girls of her station once they are taken in by the Edwards.
In the movie she is given a much calmer personality and drives Miss Frouchy away when she comes to accuse Samantha.
Captain Arthur H. Goodwin
The captain of the S.S. Londonia during Samantha's trip; he is also a friend of Admiral Beemis.
A woman who, alongside her sister Martha, schemed to rob Archibald Beemis of a private government letter in Danger in Paris. She had a dog named Prince, whom she mistreated before abandoning him at the Hotel Excelsior. Prince was later adopted by Archibald Beemis and Mary Edwards.
Burl and Glenda Griffith
The new manager of Piney Point and his wife. Mr. Griffith was wounded during the Spanish-American War and walks with a limp.
Homer and Jack Griffith
The sons of Mr. and Mrs. Griffith. They help their father around the Piney Point lodge.
The housekeeper at Lockston Castle, seen only in Clue in the Castle Tower.
A librarian at Mount Bedford Public Library.
Mr. and Mrs. Harrington
Friends of Mary Edwards aboard the S.S. Londonia. They live in San Francisco and are upset by the news of the San Francisco Earthquake while they are aboard. Mrs. Harrington takes to her bed with smelling salts, and Mr. Harrington is busy trying to telegram his office.
A young woman who works as Bertie Vanderhoff's nanny.
A reporter for the New York Daily. In The Stolen Sapphire, he books a ticket on the R.M.S Queen Caroline so he could write a story about the Blue Star Sapphire.
Jones is a new hired man at the Van Sicklen home as a handyman. He is never friendly and only speaks to growl at Samantha and Nellie. He also dumps the ashcans, so is covered in soot. He owns a dog that Nellie feels is just as mean as he is. He lives in the carriage house in the room next to the O'Malleys. During the events of Samantha and the Missing Pearls. Samantha and Nellie suspect him of stealing the pearls since he was the only one who had seen them arrive. Nellie and Samantha attempt to avoid him, but when he makes his way towards him telling them to get away from the chute, they slide down the coal chute (which ultimately leads to the discovery of the lost pearls). Jones yells down the coal chute about their foolishness, but is scolded by Mrs. Van Sicklen.
A young man from Toronto, Ontario seen touring Paris alongside his cousin William in Danger in Paris.
After contracting a fever in the fall of 1906, all of Frederic's hair fell out and he resorted to wearing a wig. His cousin, William, would look over him to make sure he wouldn't fall ill again.
A young man from Toronto, Ontario seen touring Paris alongside his cousin Frederick in Danger in Paris. William works as a doctor in Toronto.
The owner of LeBlanc's Paris Tours, seen escorting Samantha and Nellie's tour group in Danger in Paris.
LincolnJessie's husband, who works as a porter on a train that runs from New York to New Orleans. He brings back postcards and candies as well as tales and descriptions of the city that seem exotic to Samantha.
In Meet Samantha, he finds Samantha and Nellie tangled up after they startle Jessie peering into the window and laughs upon finding them. After Jessie cleans up the girls and explains that because of their newborn son she must stop working for Grandmary, he escorts the two girls home so they aren't caught.
A well-off girl in Samantha and Nellie's school. She hates the gym bloomers and wants to toss them over the edge of a hot air balloon. She is going on a ride in one for her birthday. She got a pony for her eighth birthday and wants to be a dancer like Isadora Duncan.
A girl who works as a maid at Lockston Castle. Mabel had begun working at the manor house after her father's death in 1905, resulting in her family's farm suffering and her family going into debt.
She only appears in Clue in the Castle Tower.
A Pinkerton detective hired by Horace Raven to investigate the accidents occurring at Ravenscourt, going undercover as a doorman. He's only seen in The Curse of Ravenscourt.
An employee at the Mount Bedford Glove Factory. In The Lilac Tunnel: My Journey with Samantha, she's given the task of showing the protagonist what to do and informs her about the factory's policies.