Question:  Margaret Towner returned to screen acting for a 13-episode role as Edna on a television series by a comedian of what nationality?

Context articles: Deep Roy
Tim DeKay
Lyn Scully
Mandy Clark
Ricky Gervais
James Aubrey (actor)
Special Edna
Ruth Chatterton
Frank Pando
Margaret Towner (actress)

Roy was born in Nairobi, Kenya, to Indian parents.
 He made his professional screen acting debut in a 1976 episode of "The New Avengers", titled "Target!"
 as a character named Klokoe.
 He would later make his film debut that same year, in "The Pink Panther Strikes Again", as the Italian Assassin.
 Another early role was as Mr. Sin, the "pig-brained Peking Homunculus", a villain with a distinct appetite for homicide, in the "Doctor Who" serial "The Talons of Weng-Chiang".
 In 1979, Roy also played a genetically engineered life form "Decima" in the first season "Blake's 7" episode "The Web", as well as the diminutive chess genius, "The Klute", in the second season "Blake's 7" episode "Gambit".
Timothy Robert "Tim" DeKay (born June 12, 1963) is an American actor.
 His first on screen acting job was as corporation head Larry Deon on "seaQuest 2032".
 He was a cast member of "Party of Five" from 1997–1999, "Carnivàle" from 2003–05 and "Tell Me You Love Me" in 2007.
 He has also guest-starred on a number of top-rated television series, including "Seinfeld", "Friends", "", "My Name Is Earl", "NCIS", "The New Adventures of Old Christine", "Scrubs", and "Chuck".
 DeKay starred in the USA Network series "White Collar" (2009–2014), which chronicled the partnership between a con artist (played by Matt Bomer) and an FBI agent (DeKay).
 He played Duvall Pritchard in Fox Television's 2016 sci-fi drama series "Second Chance".
Lynette "Lyn" Scully is a fictional character from the Australian soap opera "Neighbours", played by Janet Andrewartha.
 The character made her first screen appearance during the episode broadcast on 20 October 1999, along with her family and remained a prominent feature within the show until late 2006.
 Andrewartha reprised her role for a brief return in 2008 and then returned permanently in August 2009.
 Lyn departed again on 26 May 2011, so Andrewartha could pursue new acting opportunities.
 She reprised the role again in 2016, and Lyn returned on 1 February 2016.
Mandy Clark (born June 9, 1982) is an American voice actress, primarily noted for her role as Tomo Takino in the English-language dub of Azumanga Daioh.
 She auditioned for ADV Films in the year 2000 without prior drama training, and landed her first episode role in Excel Saga.
 She went on retired from voice acting in 2004 in order to begin attending college.
 In early 2006 she returned to Houston and has since graduated.
 She is currently working as a freelance digital artist.
 She was married in 2009.
Ricky Dene Gervais ( ; born 25 June 1961) is an English comedian, actor, writer, producer, director, singer, and musician.
James Aubrey Tregidgo (28 August 1947 – 6 April 2010), known professionally as James Aubrey, was an English stage and screen actor.
 He trained for the stage at the Drama Centre London.
 He made his professional acting debut in a 1962 production of "Isle of Children".
 Aubrey made his screen acting debut in the 1963 adaptation of "Lord of the Flies".
 Aubrey performed with the Royal Shakespeare Company during their 1974–1975 season.
 Theatres at which Aubrey performed included the Birmingham Repertory Theatre, the Comedy Theatre and the Old Vic.
 His last television work was in an episode of "Brief Encounters" in 2006.
"Special Edna" is the seventh episode in the fourteenth season of the American animated television series "The Simpsons".
 It originally aired on the Fox network in the United States on January 5, 2003.
 In the episode, Edna Krabappel begins to lose faith in her relationship with Principal Skinner and becomes depressed.
 Bart, wanting to raise her spirits, decides to nominate her for the Teacher of the Year Award.
 Edna and the Simpsons are flown to Orlando, Florida for the event.
Ruth Chatterton (December 24, 1892 – November 24, 1961) was an American stage, film and television actress.
 In the late 1930s, Chatterton retired from film acting but continued her career on the stage.
 She later became a successful novelist and early aviator.
 Chatterton briefly returned to screen acting in the 1950s before her death of a cerebral hemorrhage in 1961.
Francisco Javier "Frank" Pando (born 18 November 1971) is a Chilean American actor.
 Pando's screen acting career debuted in 1999 in the TV series "The Sopranos" as Agent Frank Grasso.
 He has since acted in several television shows, movies, and plays, including roles as policemen in "The Visitor", "Unbreakable Kimmy Schmidt", and "Blue Bloods".
Margaret Towner (1 October 1920 – 10 April 2017) was a veteran British stage, film, and television actress.
 Following decades of theater work, Towner achieved fame among film audiences when she appeared in a small, but significant, role as Jira in the 1999 Star Wars prequel, "".
 In 2014, at the age of 93, Towner returned to screen acting for a 13-episode role as Edna on Ricky Gervais' television series, "Derek", becoming one of the oldest working actresses in the United Kingdom.