Question: When did Augusta Stanley's husband serve as Dean of Wesminster?

Context paragraphs:
Petersburg, Georgia: Petersburg, Georgia was an upriver market town located in Wilkes County, Georgia, United States (now Elbert County).  Now dead or defunct, it was named after Petersburg, Virginia, and founded by Dionysius Oliver in 1786 to serve the rapidly growing Broad River Valley region of Georgia (Coulter 1965:32).  It enjoyed connection via pole boat with Augusta, Georgia, following the Savannah River (Coulter 1965:49).  Petersburg gained importance as a tobacco inspection station, vital to local planters in obtaining good prices for their casked produce.  During the peak of its prosperity, from 1800 to 1810, it was the third-largest city in Georgia, after Savannah and Augusta (Jones Jr. 1878:233-239).

Good Earth (restaurant chain): Good Earth was a health food restaurant chain founded in Reno, Nevada and one in San Rafael, California owned by Dean Stanley Ashby and family wife Georgia Anne Ashby Aaron Stanley Ashby and the youngest Dean Stanley Ashby II by William A. Galt that existed in the US in the 1970s.  It was purchased by General Mills in 1980, which converted most of the restaurants into other chain restaurants they were operating, such as Red Lobster and Olive Garden.  Most of the restaurants were located in California.  During the period Good Earth operated widely, it was "probably the most prominent chain example of a health-food concept", according to industry trade journal "Nation's Restaurant News".  It was based in California at the time of the purchase by General Mills.  Their tea supplier still exists as Good Earth Teas.  Two restaurants remain in Minnesota that operate under the ownership of Parasole Restaurant Holdings, one located in the Minneapolis suburb of Edina and the other in the St. Paul suburb of Roseville.

E. Andrew Balas: E. Andrew Balas M.D., Ph.D. (Budapest - ) serves as Dean and Professor at Augusta University (formerly Medical College of Georgia).  Balas is a fellow of the American College of Medical Informatics and elected member of the European Academy of Sciences and Arts.  He is Vice President of the Friends of the National Library of Medicine and Board Member of the Augusta University Health.

B.C. Wall House: The B.C. Wall House, also known as the “Sesame Lodge,” is located at North Augusta, Aiken County, South Carolina.  It was constructed in 1902 by Budd Clay Wall (the mayor of North Augusta at the time) to serve as an overflow guest home from the Hampton Terrace Hotel.  The home holds additional significant in that it was designed by a female architect, Wall’s daughter, Martha Louise Wall Andrews.  The house, which is very visible from the public street, contains elements of the Queen Anne, Classical Revival, and Bungalow Styles.  It was listed on the National Register of Historic Places on November 27, 1992.

Stanley Sproul: Stanley E. Sproul (March 18, 1920 – May 13, 2015) was an American politician and lawyer from Maine.  Sproul, a Republican, served as Mayor of Augusta, Maine from 1971 to 1974.  He simultaneously represented Augusta in the Maine House of Representatives (1973–74).  When not in public office, Sproul ran a law office.  In 1974, Sproul sought the Republican nomination for Governor of Maine, but lost to Maine Attorney General James Erwin.

Augusta Stanley: Lady Augusta Elizabeth Frederica Stanley (3 April 1822 - 1 March 1876), was daughter of Thomas Bruce, 7th Earl of Elgin and Elizabeth Oswald, Countess of Elgin.  She was brought up in Paris after her father died.  She was lady in waiting to Queen Victoria.  She met and later married Arthur P. Stanley, Dean of Westminster at the home of Mary Elizabeth Mohl in Paris.

Arthur Stanley (priest): Arthur Penrhyn Stanley, {'1': ", '2': ", '3': ", '4': "} (13 December 1815 – 18 July 1881), known as Dean Stanley, was an English churchman and academic.  He was Dean of Westminster from 1864 to 1881.  His position was that of a Broad Churchman and he was the author of a number of works on Church History.

Sulpicia Dryantilla: Sulpicia Dryantilla (died 260) was the wife of Regalianus, Roman usurper against Gallienus.  Regalianus gave her the title of Augusta to legitimize his claim.  Virtually nothing is known of her except that she was the daughter of Claudia Ammiana Dryantilla and Sulpicius Pollio, an accomplished senator and officer under Caracalla.  She was given the title of Augusta by Regalianus.  She most likely died in 260 along with her husband, when he was killed by a coalition of his own people and the Rhoxolani.

Curtis Memorial Library: The Curtis Memorial Library, now the Augusta Curtis Cultural Center, is a historic former library building at 175 East Main Street in Meriden, Connecticut. It was designed by New Haven architect Richard Williams in the Classical Revival style, and was completed in 1903.  The building was a gift to the city from Augusta Munson Curtis in honor of her husband George, who was one of the city's leading businessmen and onetime mayor.  It was listed on the National Register of Historic Places in 1981.

WJZN: WJZN (1400 AM; "Capital 95.9") is a radio station licensed to serve Augusta, Maine, United States.  The station, established in 1932 as WRDO, is owned by Townsquare Media and broadcasts a classic rock format.  WJZN's programming is also heard on W240DH (95.9 FM) in Augusta.

Supporting paragraphs: Augusta Stanley Arthur Stanley (priest)
Answer: 1864 to 1881