|Other family:||Carrie Mathison (aunt)|
Frank Mathison (grandfather, d. 2014)
Ellen Mathison (grandmother)
Frannie Mathison (cousin)
|Played by:||Rachel St. Gelais (child)|
Courtney Grosbeck (teenager)
|Seasons:||1,2, 4, 7|
Josie and her older sister Ruby meet up with Carrie at their house, after Carrie misses Ruby's birthday.
Later, Josie and her sister were seen sleeping next to their aunt Carrie, when she came over to spend the night. Then Josie woke up after Carrie did worrying about her and ask her to come live with them, so they can protect her, but Carrie responded no, but it's her job to protect them.
As a teenager she is criticial of President Elizabeth Keane.