Question: Who is the mother of the director of Faces?

full_context: Document 1: Gloria (1980 film): Gloria is a 1980 American thriller crime drama film written and directed by John Cassavetes. It tells the story of a gangster's girlfriend who goes on the run with a young boy who is being hunted by the mob for information he may or may not have. It stars Gena Rowlands, Julie Carmen, Buck Henry, and John Adames.
Document 2: James De La Vega: James De La Vega was born in East Harlem, the son of Jaime De La Vega and Elsie Matos, and graduated valedictorian at York Preparatory School and attended Cornell University, where he graduated in 1994 with a Bachelor of Fine Arts. He is a former art teacher at York Preparatory School.
Document 3: Shadows (1959 film): Shadows is a 1958 American independent drama film directed by John Cassavetes about race relations during the Beat Generation years in New York City. The film stars Ben Carruthers, Lelia Goldoni and Hugh Hurd as three African-American siblings, though only one of them is dark-skinned. The film was initially shot in 1957 and shown in 1958, but a poor reception prompted Cassavetes to rework it in 1959. Promoted as a completely improvisational film, it was intensively rehearsed in 1957, and in 1959 it was fully scripted.
Document 4: Aroldo Tieri: Born in Corigliano Calabro, son of the journalist and playwright Vincenzo Tieri, Aroldo Tieri moved in Rome at 18 to study law at university, and in the meanwhile approached acting and enrolled the Accademia Nazionale di Arte Drammatica Silvio D'Amico. Graduated in 1938, he almost immediately made his debut in theater and in film. Soon Tieri became one of the most popular and appreciated young actors, with a predisposition to the comic genre. In cinema Tieri specialized in roles on jealous, irascible, nervous boyfriends, and this characterization limited his career and caused his retirement from films in the late 1960s. His versatility was revealed especially on stage and on television, that at the end of the 1950s gave him notoriety with a successful adaptation of the Dickens' novel "Nicholas Nickleby" and then as host of "Canzonissima" in 1960. Companion for many years on the scene of the actress Giuliana Lojodice, later his wife, Tieri formed a stage company with her in 1965 and the couple was very active in multiple projects at theater, radio and TV.
Document 5: The Last Married Couple in America: It was directed by Gilbert Cates, whose most successful film "Oh, God! Book II", was released in the same year. The film starred George Segal and Natalie Wood as a California couple in the late 1970s struggling to maintain their "happily married" status as all their friends begin to get divorces and seem to be caught up in the decadence of the sexual revolution and the "ME" era. This is the last completed theatrical release Natalie Wood made before her death in 1981.
Document 6: David Kassan: David Kassan received his B.F.A. in 1999 from the College of Visual and Performing Arts at Syracuse University, Syracuse, NY. He continued his studies at The National Academy, and the Art Students League of New York, both in Manhattan
Document 7: Johnny Depp: Depp was born in Owensboro, Kentucky, the youngest of four children of Betty Sue Palmer (née Wells), a waitress, and John Christopher Depp, a civil engineer.  Depp moved frequently during his childhood. He and his siblings lived in more than 20 different places, eventually settling in Miramar, Florida in 1970. Depp's parents divorced in 1978 when he was 15. His mother married Robert Palmer, whom Depp has called "an inspiration".With the gift of a guitar from his mother when he was 12, Depp began playing in various garage bands. A year after his parents' divorce, he dropped out of Miramar High School to become a rock musician. He attempted to go back to school two weeks later, but the principal told him to follow his dream of being a musician. He played with The Kids, a band that enjoyed modest local success. The Kids set out together for Los Angeles in pursuit of a record deal, changing their name to Six Gun Method, but the group split up before signing a record deal. Depp subsequently collaborated with the band Rock City Angels and co-wrote their song "Mary", which appeared on Rock City Angels' debut Geffen Records album Young Man's Blues. On December 20, 1983, Depp married Lori Anne Allison, the sister of his band's bass player and singer. During their marriage she worked as a makeup artist while he worked a variety of odd jobs, including a telemarketer for pens. His wife introduced him to actor Nicolas Cage, who advised him to pursue an acting career. Depp and Allison divorced in 1985.
Document 8: Faces (1968 film): Faces is a 1968 drama film, written and directed by John Cassavetes, and starring John Marley, Cassavetes' wife Gena Rowlands, Fred Draper, Seymour Cassel, and Lynn Carlin. In 2011, it was added to the National Film Registry of the Library of Congress.
Document 9: John Cassavetes: Cassavetes was born in New York City, the son of Greek American Katherine Cassavetes (née Demetre), who was to be featured in some of his films, and Greek immigrant Nicholas John Cassavetes; in Greek, his name is Ιωάννης Νικόλαος Κασσαβέτης. His early years were spent with his family in Greece; when he returned at age seven, he spoke no English. He was reared on Long Island, New York. He attended Port Washington High School from 1945 to 1947 and participated in "Port Weekly" (the school paper), "Red Domino" (interclass play), football, and the "Port Light" (yearbook). Next to his photo on page 55 of his 1947 yearbook is written: "'Cassy' is always ready with a wisecrack, but he does have a serious side. A 'sensational' personality. Drives his 'heap' all over." Cassavetes attended Blair Academy in New Jersey and spent a semester at Champlain College before being expelled due to his failing grades. He spent a few weeks hitchhiking down to Florida and transferred to the American Academy of Dramatic Arts after running into friends who had just enrolled, stating the school was packed with girls, encouraging Cassavetes to enroll. He graduated in 1950 and met his future wife Gena Rowlands at her audition into the Academy in 1953 and they were married four months later in 1954. He continued acting in the theater, took small parts in films and began working on television in anthology series, such as "Alcoa Theatre".
Document 10: Gavrik Losey: Gavrik was born in New York, the son of film director Joseph Losey and fashion designer Elizabeth Hawes. He attended the Little Red SchoolHouse in Manhattan, Poughkeepsie Day School in Poughkeepsie, and high school in New Jersey. After graduating, he travelled with his blacklisted father to England where he attended University College London.
Document 11: Love Has Many Faces: Love Has Many Faces is a 1965 American drama film in Eastman Color made by Columbia Pictures. The movie was directed by Alexander Singer, and written by Marguerite Roberts. Nancy Wilson sings the title song and Edith Head designed Lana Turner's clothes.
Document 12: Minnie and Moskowitz: Minnie and Moskowitz is a 1971 film by John Cassavetes, starring his wife, Gena Rowlands, and actor Seymour Cassel in the title roles of Minnie and Moskowitz, respectively.
Document 13: Face to Face (1976 film): Face to Face () is a 1976 Swedish psychological drama film written and directed by Ingmar Bergman. It tells the story of a psychiatrist who is suffering from a mental illness. It stars Liv Ullmann and Erland Josephson.
Document 14: I'm Almost Not Crazy: John Cassavetes, the Man and His Work: I'm Almost Not Crazy: John Cassavetes, the Man and His Work is a 1989 American documentary directed by Michael Ventura and starring John Cassavetes.
Document 15: Ines Cassettari: Ines Cassettari (died 1943) was an Italian emigrant to America whose autobiography became famous. She was born in 1866 or 1867 in Lombardy, Italy, and abandoned at birth, and lived in an orphanage and then a foster home. She was forced to marry an abusive man. They immigrated to the United States, where she refused to run a brothel for him and eventually left him. She remarried and worked as a cleaning woman in the Chicago Commons until she died.
ground_truth: Katherine Cassavetes
sub_queries: Faces >> director Answer: John Cassavetes
Who is the mother of John Cassavetes ? Answer: Katherine Cassavetes