(CNN) – The Romney family got the "Mad Men" treatment in Sunday's episode, courtesy of a derogatory reference to the father of the current Republican presidential hopeful.
Henry Francis, the character who works for New York City Mayor John Lindsay, is heard telling someone on the phone he does not want his boss heading to Michigan, where George Romney served as governor from 1963 until 1969.
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"He's not going to Michigan because Romney's a clown, and I don't want him standing next to him," Francis, played by actor Christopher Stanley, said.
The most recent episode of the AMC television drama takes place in 1966, the mid-point of the elder Romney's tenure as governor.
Mitt Romney, the current GOP frontrunner and former Massachusetts governor, talked repeatedly of his late father while campaigning in Michigan's Republican primary, a contest he won handily on February 28.
George Romney launched a failed presidential bid of his own while serving as governor of Michigan. He went on to serve as former President Richard Nixon's secretary of housing and urban development.
Romney's eldest son, Tagg defended his grandfather via Twitter on Monday.
"Seriously, lib media mocking my dead grandpa?" one tweet read.
"George Romney was as good a man I've ever known. Inspirational leader, worked for civil rights, promoted freedom. We need more like him," another message read.