Some of the names in Cardcaptors (American dub) were changed from the original Japanese names. Listed below are the differences between the names.

Cardcaptors » Cardcaptor Sakura

Sakura Avalon: Sakura Kinomoto
Tori Avalon: Toya Kinomoto
Aiden Avalon: Fujitaka Kinomoto
Natasha Avalon: Nadeshiko Kinomoto
Li Showron: Syaoran Li
Meilin Rae: Meiling Li
Madison Taylor: Tomoyo Daidouji
Samantha Taylor: Sonomi Daidouji
Eli Moon: Eriol Hiiragizawa
Layla Mackenzie: Kaho Mizuki
Julian Star: Yukito Tsukishiro
Clow Reed: Clow Reed
Keroberos: Keroberos/ Cerberus
Yue: Yue
Spinner Sun: Spinel Sun
Ruby Moon: Ruby Moon
Chelsea: Chiharu Mihara
Rita: Rika Sasaki
Zachary: Takashi Yamazaki
Nikki: Naoko Yanagisawa
Maggie: Maki Matsumoto
Mr. Terada: Mr. Terada or Yoshiyuki Terada