Knopf, Alfred A. (1892-1984). President of New York publisher Alfred A. Knopf, Inc. Knopf received his BA from Columbia University in New York City in 1912 and founded Alfred Knopf, Inc., in 1915 with his future wife Blanche Wolf. They married in 1916, and their son Alfred “Pat” Knopf was born in 1918. Cather chose him as her publisher beginning with Youth and the Bright Medusa (1920) and One of Ours (1922), partly because she was dissatisfied with the promotion of her books by Houghton Mifflin but also because she recognized the high quality of Knopf's books, as well as what she regarded as his intelligent advertising. Knopf was noted for publishing the work of leading European and South American writers in translation, as well as original works. Knopf and Cather’s extensive correspondence testifies to their mutual professional respect and to what also became an important personal friendship.

Menuhin, Hephzibah (1920-1981). Pianist. Born in San Francisco, CA, to Moshe and Marutha Sher Menuhin, immigrant Russian Jews by way of Palestine, Hephzibah began studying piano at the age of four and gave her first recital at age eight. The studies and career of her older brother, violinist Yehudi, dominated the family (the youngest child, Yaltah, was also a pianist). In 1930, the Menuhin family took up residence in Paris, where Cather first met them in the home of Jan Hambourg and Isabelle McClung Hambourg and became a family friend; the children called her “Aunt Willa.” In the 1930s the Menuhin family made the Ansonia Hotel its home base during their frequent stays in New York City. Cather took the Menuhin children on walks around Central Park, read Shakespeare with them, and gave them books as gifts. Hephzibah served as Yehudi’s accompanist; they made their first recording together in 1933 and often performed together. The family purchased a ranch in Los Gatos, CA, in 1935. In 1938, after a concert in London, England, Hephzibah met Australian Lindsay Nicholas, whom she soon married (Yehudi married Lindsay’s sister Nola). She abandoned her plans for a solo debut at Carnegie Hall, moved with Nicholas to Australia, and had two sons, Kronrod and Marston. She continued to perform occasionally in Australia, including with Yehudi when he toured the country. Although Cather mentions carrying on a correspondence with Hephzibah after her move to Australia, these letters have not been located. Cather enjoyed a late life visit from Hephzibah and Yehudi and their families in 1947. In 1955, Hephzibah divorced Nicholas and married Richard Hauser. Together, they were active in human rights advocacy, and Hephzibah continued to perform. She died in London, England.

Menuhin, Marutha Sher (c. 1892-1996). Mother of Yehudi, Hepzibah and Yaltah Menuhin. Born in Russia, Marutha Sher married Moshe Mnuchin, a Hebrew teacher, in 1914. After brief stays in Palestine and New York City, where son Yehudi was born, they moved to San Francisco, CA, in 1917 and changed their surname to Menuhin. Their daughters Hepzibah and Yaltah were born in San Francisco. They educated all three children at home and sought out musical instruction for them when each was a small child. However Yehudi’s career as a violinist was given top priority. With the support of Yehudi’s patron Sidney Ehrman the family moved to New York City and Paris to advance Yehudi’s musical studies. In 1930, the Menuhin family took up residence in Paris, where Cather first met them in the home of Jan Hambourg and Isabelle McClung Hambourg. Cather evidently approved of Marutha’s parenting of her gifted children, and they became friends. In the 1930s, the Menuhin family made the Ansonia Hotel its home base during their frequent stays in New York City, and Marutha encouraged Cather’s growing relationship with her children. The family purchased a ranch in in Los Gatos, CA, in 1935, which became Marutha’s primary residence when she was not on tour with her children. Her relationships with Yehudi and Hepzibah remained strong as they emerged into adulthood, but Yaltah rebelled against her mother’s authority and the two became alienated from one another. Although only one brief letter from Cather to Marutha Menuhin is known, they evidently carried out a regular correspondence. Marutha Menuhin died in Los Gatos.

Menuhin, Yaltah (1921-2001). Pianist. Born in San Francisco, CA, to Moshe and Marutha Sher Menuhin, immigrant Russian Jews by way of Palestine, Yaltah began studying piano at the age of three. The studies and career of her older brother, violinist Yehudi, dominated the family (their second child, Hepzibah, was also a pianist). In 1930, the Menuhin family took up residence in Paris, where Cather first met them in the home of Jan Hambourg and Isabelle McClung Hambourg and became a family friend; the children called her “Aunt Willa.” In the 1930s, the Menuhin family made the Ansonia Hotel its home base during their frequent stays in New York City. Cather took the Menuhin children on walks around Central Park, read Shakespeare with them, and gave them books as gifts. The family purchased a ranch in Los Gatos, CA, in 1935. As Yaltah grew older and wanted to pursue her own musical career, her relationship with her mother grew difficult—Marutha supported Hepzibah’s role as Yehudi’s accompanist but believed a solo career inappropriate for a woman (even though many recognized that Yaltah was the most gifted musician of the three children). In June 1938, just shy of her seventeenth birthday and apparently under duress from her mother, Yaltah married William Stix, a lawyer from St. Louis, MO, who worked in Washington, DC; Cather attended the wedding. In 1939 Yaltah first separated from and then divorced Stix. In 1941, she eloped with U.S. Army officer Benjamin Rolfe. Her parents publicly disavowed the marriage and she and her mother stopped speaking to one another. The Rolfes had two children, Robert and Lionel. None of Cather’s extant letters to Yaltah mention the turmoil surrounding her marriage, divorce, and remarriage, however. Yaltah’s final marriage to American pianist Joel Ryce was long and happy, and during it she pursued a performing career. According to her son Lionel Rolfe, she treasured her letters from Cather and often reread them. She eventually gave them to him so he could sell them and use the funds to support his aspiration to become a writer.

Menuhin, Moshe (1893-1983). Russian-American teacher of Hebrew. Born in Russia into a distinguished religious Jewish family, Moshe Mnuchin moved to Palestine with his family as a child. In 1913 he moved to the U.S., where he married Marutha Sher in 1914. After the 1916 birth of their son Yehudi and Moshe’s 1917 graduation from New York University, they moved to San Francisco, CA, where their daughters Hepzibah and Yaltah were born. They changed their surname to Menuhin in 1919 when they became U.S. citizens. While Moshe taught Hebrew, Marutha supervised the musical education of their children, which later took them to New York City and Paris. Cather first met the Menuhin family in the Paris home of Jan Hambourg and Isabelle McClung Hambourg in 1930. In the 1930s, the Menuhin family made the Ansonia Hotel its home base during their frequent stays in New York City, and Cather developed strong bonds with the children and Marutha although apparently less so with Moshe. The family purchased a ranch in Los Gatos, CA, in 1935, which became their primary residence. Moshe Menuhin was a prominent voice for anti-Zionism within the U.S. Jewish community.