Addendum:

The following personages appear in other stories of the Human Comedy.

Ajuda-Pinto, Marquis Miguel d'
Father Goriot
Scenes from a Courtesan's Life
The Secrets of a Princess

Bixiou, Jean-Jacques
The Purse
A Bachelor's Establishment
The Government Clerks
Modeste Mignon
Scenes from a Courtesan's Life
The Firm of Nucingen
The Muse of the Department
Cousin Betty
The Member for Arcis
A Man of Business
Gaudissart II.
The Unconscious Humorists
Cousin Pons

Blondet (Judge)
Jealousies of a Country Town

Brossette, Abbe
The Peasantry

Cadine, Jenny
Cousin Betty
The Unconscious Humorists
The Member for Arcis

Cambremer, Pierre
A Seaside Tragedy

Canalis, Constant-Cyr-Melchior, Baron de
Letters of Two Brides
A Distinguished Provincial at Paris
Modeste Mignon
The Magic Skin
Another Study of Woman
A Start in Life
The Unconscious Humorists
The Member for Arcis

Casteran, De
The Chouans
The Seamy Side of History
Jealousies of a Country Town
The Peasantry

Chocardelle, Mademoiselle
A Prince of Bohemia
A Man of Business
Cousin Betty
The Member for Arcis

Conti, Gennaro
Lost Illusions

Espard, Jeanne-Clementine-Athenais de Blamont-Chauvry, Marquise d'
The Commission in Lunacy
A Distinguished Provincial at Paris
Scenes from a Courtesan's Life
Letters of Two Brides
Another Study of Woman
The Gondreville Mystery
The Secrets of a Princess
A Daughter of Eve

Ferdinand
The Chouans

Gaillard, Theodore
A Distinguished Provincial at Paris
Scenes from a Courtesan's Life
The Unconscious Humorists

Gaillard, Madame Theodore
Jealousies of a Country Town
A Distinguished Provincial at Paris
A Bachelor's Establishment
Scenes from a Courtesan's Life
The Unconscious Humorists

Galathionne, Prince and Princess (both not in each story)
The Secrets of a Princess
The Middle Classes
Father Goriot
A Distinguished Provincial at Paris
A Daughter of Eve

Gerard, Francois-Pascal-Simon, Baron
A Bachelor's Establishment

Gobenheim
Cesar Birotteau

Grandlieu, Duchesse Ferdinand de
Scenes from a Courtesan's Life
A Daughter of Eve

Grindot
Cesar Birotteau
Lost Illusions
A Distinguished Provincial at Paris
A Start in Life
Scenes from a Courtesan's Life
The Middle Classes
Cousin Betty

Guenic, Gaudebert-Calyste-Charles, Baron du
The Chouans

Halga, Chevalier du
The Purse

Hannequin, Leopold
Albert Savarus
Cousin Betty