Cecilia "Sissy" Jackson is the widow of the late Robby Jackson. She and Robby are the lifetime friends of Jack Ryan and his family: including his wife Cathy and children Sally, Jack Jr, Katie and Kyle. Also friends of John Clark and his family, including his wife Sandra and children Margaret and Patricia and John's co-worker Domingo Chavez, who's also Patsy's husband.


In the film, Patriot Games, Sissy Jackson is portrayed by actress

Berlinda Tolbert.