Question: Who played Jeanne Murray's cousin in the sitcom "All in the Family"?

Context paragraphs:
Jeanne d'Évreux: Jeanne d'Évreux (1310 – 4 March 1371) was Queen of France and Navarre as the third wife of King Charles IV of France.  She was the daughter of his uncle Louis, Count of Évreux and Margaret of Artois.  Their lack of sons caused the end of the direct line of the Capetian dynasty.  Because she was his first cousin, the couple required papal permission to marry from Pope John XXII.  They had three daughters, Jeanne, Marie and Blanche.

Cousin Liz: "Cousin Liz" is an episode of the American television sitcom "All in the Family".  The story concerns Edith Bunker's inheritance of a valuable tea service from her deceased cousin Liz and her decision, upon learning that Liz's "roommate" Veronica is really Liz's surviving longtime companion, to give Veronica the service.  The second episode of season 8, "Cousin Liz" originally aired on October 9, 1977.

2007 Colorado YWAM and New Life shootings: In the early morning hours of December 9, 2007, 24-year-old Matthew John Murray (b. December 5, 1983) opened fire at the Youth With A Mission training center in Arvada, Colorado, with a pistol, killing two and wounding two others before escaping.  Later that afternoon, he attacked the New Life Church in Colorado Springs, Colorado, with a number of firearms, killing two more people and injuring three before being shot by Jeanne Assam, a member of the church's safety team, who had been carrying a licensed firearm.  Murray subsequently died from a gunshot to the head, which was inflicted either by himself or by Assam.

Jeanne Murray Walker: Jeanne Murray Walker (born May 27, 1944) is an American poet and playwright.

Jean Stapleton: Jean Stapleton (born Jeanne Murray; January 19, 1923 – May 31, 2013) was an American character actress of stage, television, and film.

Grey Gardens (2009 film): Grey Gardens is an HBO film about the lives of Edith Bouvier Beale/"Little Edie", played by Drew Barrymore, and her mother Edith Ewing Bouvier/"Big Edie", played by Jessica Lange.  Co-stars include Jeanne Tripplehorn as Jacqueline Kennedy (Little Edie's cousin) and Ken Howard as Phelan Beale (Little Edie's father).  The film, directed by Michael Sucsy and co-written by Sucsy and Patricia Rozema, flashes back and forth between various events and dates ranging from Little Edie as a young débutante in 1936 moving with her mother to their Grey Gardens estate through the filming and premiere of the actual 1975 documentary "Grey Gardens".

Edith Bunker: Edith Bunker (nėe Baines) is a fictional 1970s sitcom character on "All in the Family" (and occasionally "Archie Bunker's Place"), played by Jean Stapleton.  She was the wife of Archie Bunker (who often called her a "dingbat"), mother of Gloria Stivic, mother-in-law of Michael "Meathead" Stivic and after 1975, grandmother of Joey Stivic.  Her cousin was Maude Findlay (Beatrice Arthur) who was one of Archie's nemeses.

Murray crayfish: The Murray crayfish, Euastacus armatus, is a species of freshwater crayfish endemic to Australia that belongs to the family Parastacidae.  The Murray crayfish has the largest geographic range of any of the "Euastacus" crayfish in Australia, being found in the Murray and Murrumbidgee Rivers as well as many of their tributaries.  Murray crayfish are also known as "Murray River crayfish", "Murray crays", "freshwater crays", "spiny freshwater crays", "spinies" and in the Wagga Wagga region of southern New South Wales they are simply known as "lobsters".

Glasgow (Cambridge, Maryland): Glasgow is a historic home located at Cambridge, Dorchester County, Maryland.  It is a Federal style, gable-front, 2 ⁄ -story brick house built about 1792.  Attached is a 1 ⁄ -story frame wing dating from the early 20th century.  Local history sometimes holds that the home was the birthplace of William Vans Murray, but land records and Murray's biographical data both indicate that it is unlikely that it was ever his home.  It is possible, however, that Murray stayed there for some time after his return from his service as foreign minister in the Netherlands, with his first cousin William Murray Robertson, the owner at the time.

Charlotte Murray, Duchess of Atholl: Charlotte Murray, Duchess of Atholl, the 8th Baroness Strange (13 October 1731 – 13 October 1805) was a Scottish peer.  Born Lady Charlotte Murray, she was the daughter of the 2nd Duke of Atholl.  On 23 October 1753, she married her first cousin, John Murray at Dunkeld, Scotland.  They had nine children.

Supporting paragraphs: Edith Bunker Jean Stapleton
Answer: Beatrice Arthur