|Behind the scenes|
|First Appearance:||The Broken Ear|
|Last Appearance:||The Broken Ear|
|"Ah, my dear Captain Fatstock!"|
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Although Jacob Balthazar's landlady's name is unknown, but she is the landlady of Jacob Balthazar. She only appeared in The Broken Ear. She asked Tintin some questions and she was frightened by Polly, thinking that he is Balthazar's Ghost. She screamed and ran to another resident Colonel Barker for help.