Namesakes
Fictional Characters from Television:
1 character
Izzie Stevens (a.k.a. Isobel) 2005 Grey's Anatomy 
Notable Actors and Actresses:
2 actresses
Bel Powley (a.k.a. Isobel) 1992-
Daisy Ridley (a.k.a. Isobel) 1992-
Title Characters:
3 books, 1 song
(song) Isobel 1995 Isobel
(book) Isobel 2012 Unraveling Isobel
(book) Isobel Key 2012 The Burning of Isobel Key
(book) Isobel 2013 Lady Isobel's Champion