Honey
Dr. Seuss's niece was named Peggy Geisel. She was the daughter of his sister, Marnie.
Don Quixote's niece is named Antonia Quijana.
No, but he has a niece named that.
yes
Im not sure, but i do know he had a niece named Jane Lee, because she is my great great grandmother
yes
no
Yes
Gary Cooper had a daughter named Maria Cooper Janis and a daughter named Maria Cooper Janis and a son named Gary Cooper Jr.
No, she had a niece named "Little Lil"
No.
No but she found out she had a niece named Celia, (I think) she does have a niece though. And she visted her grave.