All the relatives of Mr Mulliner on one (long) page - in alphabetical order with their relationship to Mr Mulliner. A list of the stories, in publication order, follows. It is not possible to produce an accurate family tree.
The Mulliners
Mr Mulliner
A short, stout, comfortable man of middle-age. Story-teller at the Angler's Rest, partial to a hot scotch with a slice of lemon. He has spent at least two years in the East. (All stories except From a Detective's Notebook.)
Adrian Mulliner
Nephew. A private detective with Widgery and Boon Investigators, London. He suffers from dyspepsia and rarely smiles. Has an aunt Elizabeth. (The Smile That Wins and From a Detective's Notebook)
Alfred Mulliner
Nephew. A stage conjuror, The Great Alfredo, twin brother of George. (George and Alfred)
Angela Mulliner
Sister-in-law. Née Purdue, married to Wilfred and mother of Ferdinand and Percival. (A Slice of Life) She sent Buck-U-Uppo to her nephew Augustine leading to interesting consequences. (Mulliner's Buck-U-Uppo)
Anselm Mulliner
Younger son of cousin Rupert. Curate of Rising Mattock in Hampshire. (Anselm gets his Chance)
Archibald Mulliner
Nephew. A Drone, he can imitate a hen laying an egg. In love with Aurelia Cammarleigh. (The Reverent Wooing of Archibald Mulliner, Archibald and the Masses and The Code of the Mulliners). Also mentioned in (The Fat of the Land)
Augustine Mulliner
Nephew. Curate at Lower Briskett-in-the-Midden, later secretary to the Bishop of Stortford. A mild, weak man until 'bucked-up'. He has a younger brother (unnamed). (Mulliner's Buck-U-Uppo and The Bishop's Move) Later, he is the vicar of Walsingford-below-Chiveney-on-Thames. (Gala Night)
Augustus Mulliner
Nephew. In love with Hermione Brimble. (The Right Approach)
Brancepeth Mulliner
Nephew. An artist in search of a character. (Buried Treasure)
Bulstrode Mulliner
Nephew (son of Joseph Mulliner). Enrolled as a writer in Hollywood. (The Castaways)
Cedric Mulliner
Cousin. A prim and fussy bachelor of 45 years, a leading snob and an authority on dress. His foppishness leads him to a surprising decision. (The Story of Cedric)
Charlotte Mulliner
Niece. Has a private income which allows her to write Vignettes in Verse. (The Unpleasantness at Bludleigh Court)
Clarence Mulliner
Cousin. A photographer who made a stand at the sort of people presenting themselves to have their portraits taken. (The Romance of a Bulb-Squeezer)
Cyril Mulliner
Nephew. An interior decorator. An avid reader of mystery stories. (Strychnine in the Soup)
Egbert Mulliner
1. Cousin. An assistant editor of The Weekly Booklover, who has spent a lot of time listening to female authors. (Best Seller)
2. Cousin. A Civil Servant who wants to be an interior decorator. (Another Christmas Carol)
Eustace Mulliner
Nephew. Attached to the British Embassy in Switzerland. (Open House)
Evangeline Mulliner
Niece by marriage, née Pendlebury, married to Egbert. (Best Seller)
Frederick Mulliner
Nephew, brother of Dr George Mulliner. He met his girl when forced to visit their old nurse. (Portrait of a Disciplinarian)
George Mulliner (Dr)
Nephew. A doctor practicing in Bingley-on-Sea, brother of Frederick. (Portrait of a Disciplinarian)
George Mulliner (Mr)
1. Nephew. A young man of independent means, living in East Wobsley, Worcs. A stammerer in love with Susan Blake, a fellow crossword enthusiast. (The Truth About George)
2. Nephew. A writer of additional dialogue in Hollywood, twin brother of Alfred. (George and Alfred)
Ignatius Mulliner
Nephew. A portrait painter who was not prepared for the effects of giving up the weed. (The Man who gave up Smoking)
Joseph Mulliner
Brother, father of Bulstrode. (Mentioned in The Castaways)
Lancelot Mulliner
1. Nephew. Lancelot Bassington Mulliner. A poet, aged 24 and just down from Oxford. Tried to get a job as poetry writer for adverts but failed magnificently. (Came the Dawn)
2. Son of cousin Edward. A professional portrait painter in Bott St, London. Brought up by his uncle Theodore. (The Story of Webster and Cats Will Be Cats)
Mervyn Mulliner
Son of a cousin. A chump. (The Knightly Quest of Mervyn)
See Montrose below. (A Cagey Gorilla (US version))
Montrose Mulliner
A distant cousin. An assistant director with the Perfecto-Zizzbaum Motion Picture Company. Called 'Mervyn' in the US version. (Monkey Business)
Mordred Mulliner
Nephew. Has a bad habit of throwing away lighted cigarettes - he burned down two flats in one year. (The Fiery Wooing of Mordred)
Osbert Mulliner
Nephew. A handsome, wealthy man in love, faced with two violent men. Collects old jade. (The Ordeal of Osbert Mulliner)
Reginald Mulliner
Nephew (son of late brother). Not very bright, he inherits money. (Big Business)
Rupert Mulliner
Cousin. Father of Anselm. (Mentioned in Anselm gets his Chance.)
Sacheverall Mulliner
Nephew. A very timid man. (The Voice from the Past)
Theophilus Mulliner
A cousin of Augustus. The Bishop of Bognor. (The Right Approach)
Wilfred Mulliner
Brother, married to Angela and father of Percival and Ferdinand, they live in Lesser Lossingham, Shropshire. He is a chemist and the inventor of Mulliner's Magic Marvels, including Raven Gypsy Face Cream, Snow of the Mountains Lotion, Reduc-o, Ease-o and Buck-U-Uppo, and is a member of the Senior Test Tubes club. He used the name 'Straker' when posing as a valet. (A Slice of Life)
Wilhelmina Mulliner
Sister in law. Widow of Sir Sholto Mulliner, MVO and mother of Archibald. (The Code of the Mulliners)
William Mulliner
Uncle. Born 1872. Caught up in the San Francisco Earthquake of 1906 where he won the hand of Myrtle Banks. Their son's name commemorates the event - John San Francisco Earthquake Mulliner. (The Story of William)
Wilmot Mulliner
A distant connection. Works as a Nodder with the Perfecto-Zizzbaum Motion Picture Corp. (The Nodder and The Juice of an Orange)
The Extended Family
Joseph, Earl of Blotsam
Uncle of Mervyn Mulliner. (The Knightly Quest of Mervyn)
Theodore, the Bishop of Bongo-Bongo
Uncle of Lancelot Mulliner in The Story of Webster and Cats Will Be Cats.
Jeremiah Briggs
Brother-in-law. A sister married a Mulliner who produced a son, Lancelot. (Came the Dawn)