Cather, Grosvenor Perry (1883-1918) (“G.P.”). Cather’s cousin. G.P. Cather was born in Catherton, NE, the oldest son of Frances and George Cather. He attended Grand Island Baptist College and the University of Nebraska in Lincoln but was a poor student and did not earn a degree. He married his childhood friend Myrtle Bartlett in 1910. Restless and unsuccessful both before and after his marriage, he joined the Nebraska National Guard in 1914 and served under General John J. Pershing on the Mexican border in 1916. He became a member of the Allied Expeditionary Force in 1917 and was commissioned as a second lieutenant. He died in action in Cantigny, France, on May 28 and was posthumously awarded the Distinguished Service Cross and the Croix de Guerre. Willa Cather read his letters home to his mother about his experiences in the army, and she modeled Claude Wheeler, the protagonist of One of Ours (1922), on G.P. His body was first buried in a military cemetery in France, where Cather visited his grave in 1920. In 1921, a large military funeral marked the reinterment of his remains in Bladen, NE.

Cather, John (1892-1959) (“Jack”). Cather’s brother. Born and raised in Red Cloud, NE, Jack was the seventh child and fourth son of Charles and Virginia Cather. He was nearly two decades younger than Willa Cather, and she was a doting older sister when he was a small boy. Because she missed him after her 1896 move to Pittsburgh, PA, she wrote several poems about him and the story “Jack-a-Boy” (1901). After graduating from Red Cloud High School in 1912, Jack studied for two years at University of Nebraska in Lincoln. With Willa Cather’s encouragement, in 1914 he enrolled at the Carnegie Institute of Technology in Pittsburgh to study engineering. Willa Cather was then living in New York City but traveled to Pittsburgh to help him settle in and enjoyed visiting him and supported his decision to change his major to theater. It is not clear whether he graduated from Carnegie Tech but the British government trained him as a chemist so he could inspect munitions factories. While working in Smethport, PA, he met Irma Wells, and they married in 1918. They had two children, Catherine and Ella Faye. After World War I, he worked as a chemical engineer in the oil industry in Cincinnati, OH, Casper, WY, and Bradford, PA. In 1936 he moved to Whittier, CA, and became a business partner with his brothers Douglass and James in an oil production company. He died in Long Beach, CA. Willa Cather mentions him frequently in letters, but she seems to have had little contact with him and his family in later years, and no letters from her to him have surfaced.

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.