I do not see as ironic in any way. It turns out that Mitt's grandfather was monogamous. His great grandfather, however was not.
George Romney's grandparents were polygamous Mormons who fled the United States with their children owing to the federal government's prosecution of polygamy.[1] His maternal grandfather was Helaman Pratt (1846–1909), who presided over the Mormon mission in Mexico City before moving to the Mexican state of Chihuahua and who was the son of original Mormon apostle Parley P. Pratt (1807–1857).[2][3] In the 1920s, Romney's uncle Rey L. Pratt (1878–1931) played a major role in the preservation and expansion of the Mormon presence in Mexico and in its introduction to South America.[4] A more distant kinsman was George Romney (1734–1802), a noted portrait painter in Britain during the last quarter of the 18th century.[5]
Romney's parents, Gaskell Romney (1871–1955) and Anna Amelia Pratt (1876–1926), were American citizens and natives of Utah. They married in 1895 in Mexico and lived in Colonia Dublán in Galeana in the state of Chihuahua (one of the Mormon colonies in Mexico) where George was born on July 8, 1907.[1][3][6] They practiced monogamy[1] (polygamy having been abolished by the 1890 Manifesto, although it persisted in places, especially Mexico).[7] George had three older brothers, two younger brothers, and a younger sister.[8] Gaskell Romney was a successful carpenter, house builder, and farmer who headed the most prosperous family in the colony,[9][10] which was situated in an agricultural valley below the Sierra Madre Occidental.[11] The family chose U.S. citizenship for their children, including George.[11]
What is deeply strange is that the Republican party is so devoid of competent, electable people that Mitt Romney is the best of the bunch. There are better possible candidates, like Huntsman, but the teabaggers have turned the party into a band of stubborn and ignorant stooges that will not nominate their best people.