Addendum:

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

Aquilina
  Melmoth Reconciled
Bianchon, Horace
  Father Goriot
  The Atheist's Mass
  Cesar Birotteau
  The Commission in Lunacy
  Lost Illusions
  A Distinguished Provincial at Paris
  A Bachelor's Establishment
  The Secrets of a Princess
  The Government Clerks
  Pierrette
  A Study of Woman
  Scenes from a Courtesan's Life
  Honorine
  The Seamy Side of History
  A Second Home
  A Prince of Bohemia
  Letters of Two Brides
  The Muse of the Department
  The Imaginary Mistress
  The Middle Classes
  Cousin Betty
  The Country Parson
In addition, M. Bianchon narrated the following:
  Another Study of Woman
  La Grande Breteche
Canalis, Constant-Cyr-Melchior, Baron de
  Letters of Two Brides
  A Distinguished Provincial at Paris
  Modeste Mignon
  Another Study of Woman
  A Start in Life
  Beatrix
  The Unconscious Humorists
  The Member for Arcis
Dudley, Lady Arabella
  The Lily of the Valley
  The Ball at Sceaux
  The Secrets of a Princess
  A Daughter of Eve
  Letters of Two Brides
Euphrasia
  Melmoth Reconciled
Joseph
  A Study of Woman
Massol
  Scenes from a Courtesan's Life
  A Daughter of Eve
  Cousin Betty
  The Unconscious Humorists
Navarreins, Duc de
  A Bachelor's Establishment
  Colonel Chabert
  The Muse of the Department
  The Thirteen
  Jealousies of a Country Town
  The Peasantry
  Scenes from a Courtesan's Life
  The Country Parson
  The Gondreville Mystery
  The Secrets of a Princess
  Cousin Betty
Rastignac, Eugene de
  Father Goriot
  A Distinguished Provincial at Paris
  Scenes from a Courtesan's Life
  The Ball at Sceaux
  The Interdiction
  A Study of Woman
  Another Study of Woman
  The Secrets of a Princess
  A Daughter of Eve
  The Gondreville Mystery
  The Firm of Nucingen
  Cousin Betty
  The Member for Arcis
  The Unconscious Humorists
Taillefer, Jean-Frederic
  The Firm of Nucingen
  Father Goriot
  The Red Inn