<P> Eleanor Faye Bartowski Woodcomb, MD, PhD, is the older sister of title character Chuck Bartowski on the television series Chuck . She is portrayed by actress Sarah Lancaster . </P> <P> Eleanor Faye Bartowski was born to Stephen and Mary Bartowski in 1978 . With the exception of her younger brother, Chuck (Zachary Levi), little was initially known about the Bartowski family beyond that their mother left them when they were younger (Chuck was in the fifth grade) and that their father was "never really there ." Her father, Stephen J. Bartowski, first appeared in the episode "Chuck Versus the Dream Job ." Ellie attended and graduated from UCLA Medical School, where she met and went to school with her future husband, Devon Woodcomb . Devon was in love with her for three years ("give or take") before the events of "Chuck Versus the Seduction ." They began dating when Devon gave her his sweater and said it was meant for her because the color matched her eyes . She also earned a Ph. D., although neither the discipline in which, nor the university where, she studied has been revealed as of the end of season four . </P> <P> When her brother was expelled by Stanford University in 2003 he came back to Echo Park in Los Angeles to stay with her . For much of their lives growing up, Chuck and Ellie relied on each other, and after Chuck returned home, Ellie became one of his main sources of support as he recovered from Bryce Larkin's betrayal . At the beginning of the series, Ellie is throwing a birthday party for Chuck and has invited a number of her girlfriends for him to meet in hopes of helping him get past Jill . In "Chuck Versus the Subway", late in season 3, she learns that Chuck is a spy . In the season 4 opener "Chuck Versus the Anniversary" it is revealed Ellie and Devon are expecting a baby . Daughter Clara is born in the mid season episode "Chuck Versus the Push Mix". </P> <P> Ellie Bartowski - Woodcomb is portrayed by actress Sarah Lancaster . She first appears in the series at the beginning of "Chuck Versus the Intersect," when Chuck tries to escape his birthday party which she arranged to try introducing him to real women . She remains one of the most important anchors between Chuck and his real life throughout the series, and her safety is one of his foremost concerns . When Chuck discovered Casey had bugged the home he shared with Ellie, he was even prepared to threaten Casey if he found out he was spying on her as well . When Chuck's extraction by the government was imminent, he made a point of telling her goodbye, and later asked Sarah to tell her something to make his disappearance "okay ." </P>

When does ellie find out chuck is still a spy