Mona Sterling

Role: Roger Sterling's first wife
Margaret Sterling's mother

Played by: Talia Balsam
Talia Balsam and John Slattery, who plays Roger Sterling, are married; her first husband was George Clooney

First Appearance: S1E2 - Ladies Room
Final Appearance: S7E7 - Waterloo

Memorable Moments

Mona shuts down Betty's attempts to become friends and confidantes
S1E2: Ladies Room

Mona blames Don for the breakup of her marriage to Roger

Mona expresses her genuine love for Roger at the hospital while Don looks on, somehow envious of the guy who had the heart attack.
S1E10: Long Weekend

Mona, an actual adult, helps Margaret (who is not), manage her wedding in the wake of President Kennedy's assassination. 

Mona blames Bert for Roger's second heart attack, for Roger going back to work too early, and for getting more of his time and attention.
S1E11: Indian Summer

Mona and Roger visit Marigold. Two people in this photo are wearing fur, but otherwise, they have very little in common.

Mona Sterling

"I thought you left me because I had gotten old, but then I realized it was because you did." - to Roger Sterling, S5E5: At the Codfish Ball
"Hey, genius. Brooks is in jail in Kingston." - to Roger Sterling, S7E4: The Monolith

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