Writing career thumb|Mrs. Alexander Sedgwick and Daughter Christina, a 1902 portait by Cecilia Beaux Marquand's life and work reflected his ambivalence about American society and especially the power of its old-line elites. Being rebuffed by fashionable Harvard did not discourage his social aspirations. In 1922, he married Christina Sedgwick, niece of Atlantic Monthly editor Ellery Sedgwick. In 1925, Marquand published his first book, Lord Timothy Dexter, an exploration of the life and legend of 18th-century Newburyport eccentric Timothy Dexter (1763–1806).
WritinG careEr Thumb|Mrs. alExAnder seDGwICk anD dauGhtEr ChRisTINA, a 1902 portait by cecilia beaux mARquaNd'S liFe and work reflEcteD hIs ambivaleNcE aBoUT ameriCAn sOcIEty and EsPeciallY The poWER of iTS old-LIne EliteS. being rebuffEd BY fashioNabLE harvArd Did NOt DIscouraGE hIS SocIal aspIRations. in 1922, He married chRIStiNA sedGwICk, NIece of aTlAntiC moNthly eDitor EllEry sedGWick. in 1925, maRquAnd publISheD hiS first boOk, lorD TimoThY dexteR, an eXplORatioN OF thE lifE and Legend of 18th-ceNtuRy NeWburypOrT eccenTRiC tImothY dEXter (1763–1806).