Fields, Annie Adams (1835-1915). Literary hostess, author, and social reformer. At age 20, Annie Adams married James T. Fields, partner in the Boston publishing house of Ticknor & Fields. Both before and after her husband’s death in 1881, Fields often entertained important American, British, and European authors at her home at 148 Charles Street in Boston, MA. After James’ death, Sarah Orne Jewett, whose books were published by Ticknor & Fields, began sharing Annie’s homes at 148 Charles Street and Manchester-on-the-Sea, MA. Cather met Fields in Boston in 1908, a meeting Cather described in "The House on Charles Street," an essay reviewing Memories of a Hostess (a volume of selections from Fields' journals, 1922). A revised version of this essay, retitled "148 Charles Street," appeared in Not Under Forty (1936). After Jewett’s death in 1909, Fields edited The Letters of Sarah Orne Jewett (1911), which included several letters to Cather. Fearing that 148 Charles Street would become a museum after her death, Fields requested that it be torn down.

Tudor, Mary (1516-1558). Queen of England and Spain. Mary was the only surviving child of Henry VIII of England and his first wife, Catherine of Aragon. After she succeeded her half-brother, Edward VI, in 1553, Mary, a devout Catholic, attempted to restore Catholicism and reverse the Protestant reformation in England; she became known as “Bloody Mary” to Protestants. She married Philip of Spain in 1554, becoming queen of Spain when he became king in 1556. Mary was succeeded by her Protestant half-sister, Elizabeth I. Cather compared Mary Baker Eddy’s looks to Queen Mary, whose portrait she probably saw in Isabella Stewart Gardner’s collection in Boston.

McClure, Samuel Sidney (1857-1949) (“S.S.”). Irish-born American publisher. McClure immigrated to the U.S. at age nine, living with his family in Indiana. Despite poverty and the limited education he had received in Ireland, he graduated from high school and then Knox College in Illinois. He then moved to Boston, MA, where from 1882 to 1884 he edited the Wheelman, a bicycling magazine. Despite opposition from her parents, he married his Knox College classmate Harriet Hurd in 1883. The couple had four biological children (Eleanor, Bess, Mary, and Robert), and adopted one (Enrico). In 1884, S.S. started McClure’s Syndicate, which placed fiction in newspapers across the country. In 1893 with his college classmate John Sanborn Phillips he started McClure's Magazine, which was best-known for the "muckraking" exposés by writers such as Ida Tarbell and Lincoln Steffens, but which also published literature. After his cousin H.H. McClure, who worked for the McClure Syndicate, brought Cather to S.S. McClure’s attention, McClure, Phillips & Co. brought out Cather’s first book of fiction, The Troll Garden (1905). When most of the editorial staff, including Steffens and Tarbell, resigned from McClure’s in 1906, he hired Cather as an editor; she later became managing editor. After she left her position at McClure’s in 1912 and when S. S. McClure had lost control of the magazine still bearing his name, Cather ghost wrote his autobiography (McClure’s serial 1913-1914, book publication 1914). McClure made repeated—and ultimately failed—attempts to reestablish himself in journalism and magazine publishing, often trying to enlist Cather in these enterprises. She almost went with him to Europe in 1915 to report on the war for the Evening Mail, and she remained personally loyal to her mercurial and often-irresponsible former employer. He served as the prototype for Marcus O’Mally, editor of the Outcry, in her story “Ardessa” (1918), and it has been suggested that Cather modeled the courtship and marriage between Myra and Oswald Henshaw in My Mortal Enemy (1926) on that of the McClures.