Forebears: • A Sieur de Moulinières "came over with the Conqueror", presumably in 1066. • A Mulliner "once received the thanks of his Sovereign for services rendered on the field of
Crecy". (The Battle of Crecy occurred in 1346.)
Grandmother: • Unnamed. Died in the late 19th century. It is this grandmother who made William (below) pledge to not drink until he turned 21—or 41, William can't quite remember which.
Uncles: • William Mulliner, a businessman; a survivor of the San Francisco earthquake of 1906. ("The Story of William")
Aunts: • Myrtle Banks, married William
Brothers: • Wilfred Mulliner, a chemist and inventor of various creams, lotions, and tonics, known in the trade as ''Mulliner's Magic Marvels''. Featured mainly in
A Slice of Life (short story) he also has a cameo role (Rev. Augustine Mulliner reads a letter from him) in
Mulliner's Buck-U-Uppo, where the tonic Buck-U-Uppo is introduced. Wilfred marries Angela Purdue, the ward of Sir Jasper ffinch-ffarrowmere (with two small f's) and they have two sons, Percival who goes to a prep school in
Sussex and Ferdinand who attends
Eton College. • Sir Sholto Mulliner,
M.V.O. • Joseph Mulliner, being the father of Bulstrode. (Mentioned in "The Castaways")
Sisters-in-law: • Angela Purdue, married Wilfred ("A Slice of Life",
Mulliner's Buck-U-Uppo) • Lady Wilhelmina Mulliner, the widow of Sir Sholto Mulliner and the mother of Archibald. ("The Code of the Mulliners")
First cousins: • John San Francisco Earthquake Mulliner, son of William and Myrtle • (unnamed brother of above) • Clarence Mulliner, photographer ("The Romance of a Bulb-Squeezer") • Cedric Mulliner, a foppish bachelor of 45 years. ("The Story of Cedric") • Lady Wickham, novelist under the pen-name "George Masterman" • Edward Mulliner • Rupert Mulliner; the father of Anselm. (Mentioned in "Anselm gets his Chance") • Egbert Mulliner, civil servant ("Another Christmas Carol")
Cousins by marriage: • Gladys Biggs, married Clarence • Myrtle Watling, married Cedric • Sir Cuthbert Wickham, married Lady Wickham
First cousins, once removed: •
Roberta "Bobbie" Wickham, daughter of Sir Cuthbert and Lady Wickham • Lancelot Mulliner, an artist, Edward's son; a portrait painter in Bott St, London. Brought up by his uncle Theodore. ("The Story of Webster", "Cats Will Be Cats") • Mervyn Mulliner, a son of a Mr Mulliner's cousin, being a chump. ("The Knightly Quest of Mervyn") • Anselm Mulliner, a curate, Rupert's younger son ("Anselm Gets His Chance") • (unnamed older brother of Anselm)
First cousin, once removed, by marriage: • Gladys Bingley, married Lancelot
Distant cousins: • James Rodman, mystery novelist • Agnes Flack, championship golfer and "daughter of a distant cousin" • Frederick Fitch-Fitch, prospective antique shop owner • Montrose Mulliner, Assistant Director of the Perfecto-Zizzbaum Motion Picture Corp. of Hollywood ("Monkey Business") • Wilmot Mulliner, a "nodder" at Perfecto-Zizzbaum ("The Nodder", "The Juice of an Orange") • (unnamed), a young second cousin who has left his wife and is filing papers of divorce ("The Ordeal of Osbert Mulliner")
Distant cousins by marriage: • Sidney George McMurdo, insurance executive and scratch golfer; marries Agnes • Angela Purvis, conjurer's assistant; marries Frederick • Rosalie Beamish, marries Montrose • Mabel Potter, a private secretary and ex-bird imitator in Vaudeville; marries Wilmot
Nephews: Note that Mr. Mulliner has three nephews named George, all different people. • George Mulliner, a stammerer and crossword puzzle enthusiast, being in love with Susan Blake. ("The Truth About George") • Ferdinand Mulliner, studying at Eton (older son of Wilfred and Angela). • Percival Mulliner, at preparatory school in Sussex (younger son of Wilfred and Angela). •
Augustine Mulliner, being a meek curate who eventually rose to become vicar of Walsingford-below-Chiveney-on-Thames thanks to the Buck-U-Uppo tonic invented by
Wilfred Mulliner. (
Mulliner's Buck-U-Uppo, "The Bishop's Move", "Gala Night") • (name unknown), a student at Harchester, younger brother of Augustine. • Lancelot Bassington Mulliner, an aspiring poet. ("Came the Dawn") • Osbert Mulliner, a rich jade collector. ("The Ordeal of Osbert Mulliner") • Frederick Mulliner, brother of Dr. George. ("Portrait of a Disciplinarian") • Dr. George Mulliner, brother of Frederick. • Archibald Mulliner, son of Sir Sholto and Lady Wilhelmina, who does a masterful impression of a hen laying an egg; a member of the
Drones Club and a sock collector. Engaged to
Aurelia Cammarleigh. ("
The Reverent Wooing of Archibald", "Archibald and the Masses", "The Code of the Mulliners"; mentioned in "The Fat of the Land") • Ignatius Mulliner, portrait painter and ukulele player. ("The Man Who Gave Up Smoking") • Mordred Mulliner, a poet and an accidental pyromaniac. ("The Fiery Wooing of Mordred") • Adrian Mulliner, a private detective who possesses a sinister smile. ("The Smile That Wins", "From a Detective's Notebook") • Sacheverall Mulliner, a very timid man who suffers from Headmaster Phobia. ("The Voice From the Past") • Eustace Mulliner, attached to the British Embassy in Switzerland. ("Open House") • Egbert Mulliner, assistant editor of 'The Weekly Booklover'. (
Best Seller) • Cyril Mulliner, interior decorator and avid reader of mystery novels. (
Strychnine in the Soup) • Bulstrode Mulliner (son of Joseph Mulliner), screenwriter in Hollywood. ("The Castaways") • Brancepeth Mulliner, an artist in search of a character. ("Buried Treasure") • Augustus Mulliner, in love with Hermione Brimble. ("The Right Approach") • Reginald Mulliner, inheritor of a substantial sum of money ("Big Business") • George Mulliner, screenwriter in Hollywood, identical twin of Alfred ("George and Alfred") • Alfred Mulliner, professional conjurer known as the Great Alfredo, identical twin of George ("George and Alfred")
Nephews by marriage: • Aubrey Bassinger, married Charlotte
Nieces: • Charlotte Mulliner, a poet writing "Vignettes in Verse". ("The Unpleasantness at Bludleigh Court")
Nieces by marriage: • Aurelia Cammerleigh, married Archibald • Annabella Spockett-Sprockett, married Mordred • Hermione Rossiter, married Ignatius • Mabel Petherick-Soames, married Osbert • Evangeline Pembury, novelist, married Egbert (
Best Seller) • Amelia Bassett, married Cyril • Jane, married Augustine • Hermione Brimble, married Augustus • Jane Oliphant, married Frederick • Lady Millicent Shipton-Bellinger, married Adrian • Muriel Branksome, married Sacheverell • Susan Blake, married George (her fellow crossword puzzle enthusiast)
Nature of relationship uncertain: • Theophilus Mulliner, the bishop of Bognor ("The Right Approach") ==Other minor characters==