Question: what famous actor was Marc Pickering Working with in Sleepy Hollow?

Context articles: Old Dutch Church of Sleepy Hollow
Marc Pickering
The Legend of Sleepy Hollow
Sleepy Hollow Cemetery
List of Sleepy Hollow characters
Ichabod – The Legend of Sleepy Hollow
Sylvio Sarkis
Sleepy Hollow (film)
Sleepy Hollow (TV series)
The Legend of Sleepy Hollow (1980 film)

The Old Dutch Church of Sleepy Hollow, listed on the National Register of Historic Places as Dutch Reformed Church (Sleepy Hollow), is a 17th-century stone church located on Albany Post Road (U.S. Route 9) in Sleepy Hollow, New York, United States.
 It and its five-acre (2 ha) churchyard feature prominently in Washington Irving's "The Legend of Sleepy Hollow".
 The churchyard is often confused with the contiguous but separate Sleepy Hollow Cemetery.
Marc Pickering (born 5 June 1985) is an English stage, film and television actor who appeared in "Sleepy Hollow", "Calendar Girls", and HBO's Boardwalk Empire.
"The Legend of Sleepy Hollow" is a short story of speculative fiction by American author Washington Irving, contained in his collection of 34 essays and short stories entitled, "The Sketch Book of Geoffrey Crayon, Gent.
".
 Written while Irving was living abroad in Birmingham, England, "The Legend of Sleepy Hollow" was first published in 1820.
 Along with Irving's companion piece "Rip Van Winkle", "The Legend of Sleepy Hollow" is among the earliest examples of American fiction with enduring popularity, especially during Halloween because of a character known as the headless horseman believed to be a Hessian soldier who lost his head to a cannonball in battle.
Sleepy Hollow Cemetery in Sleepy Hollow, New York, is the final resting place of numerous famous figures, including Washington Irving, whose story "The Legend of Sleepy Hollow" is set in the adjacent Old Dutch Burying Ground.
 Incorporated in 1849 as Tarrytown Cemetery, it posthumously honored Irving's request that it change its name to Sleepy Hollow Cemetery.
 It was listed on the National Register of Historic Places in 2009.
The following is a list of characters from the Fox supernatural drama television series "Sleepy Hollow", which is loosely based on the 1820 Halloween short story "The Legend of Sleepy Hollow" by Washington Irving with added concepts from "Rip Van Winkle", also by Irving.
Ichabod – The Legend of Sleepy Hollow is a studio album of phonograph records by Bing Crosby released in 1949 narrating the famous Washington Irving story of "The Legend of Sleepy Hollow".
Sylvio Sarkis is a Lebanese actor born on the 28th of September 1998.
 His career started in 2008 when he participated in the hit Lebanese series "Mou’abbad" along with the much known actors Badih Abou Chakra and Patricia Nammour.
 Sylvio Sarkis had worked over the past 9 years in 7 hit series such as: "Mou’abbad (Mou2abbad)", "Badal An Dayeh (Badal 3an Daye3)" with famous actor Youssef El Khal and Nelly Maatouk, "Ala El A’aehed (3ala Al 3ahed)" with Famous Actress Darine Hamze and Talal El Jurdi where Sylvio was one of the three main characters in the series.
 "Ayli Mat’oub Alaya (3ayle Mat3oub 3laya)" along side with the late actor Issam Breidy and actress Yara Fares.
 The hit Series "Helwe W Kezzabi (Beautiful Liar)" with the famous actress Dalida Khalil and famous singer Ziad Bourji.
 "Joumhouriyet Noun" with famous actor Youssef Haddad and famous actress Rita Harb.
 "50 Alef (50 thousand)" with famous actor Tony Issa and famous actress Dalida Khalil which was his second collaboration with her as being co-actors and main characters.
Sleepy Hollow is a 1999 American Gothic supernatural horror film directed by Tim Burton.
 It is a film adaptation loosely inspired by the 1820 short story "The Legend of Sleepy Hollow" by Washington Irving and stars Johnny Depp and Christina Ricci, with Miranda Richardson, Michael Gambon, Casper Van Dien, and Jeffrey Jones in supporting roles.
 The plot follows police constable Ichabod Crane (Depp) sent from New York City to investigate a series of murders in the village of Sleepy Hollow by a mysterious Headless Horseman.
Sleepy Hollow is an American supernatural drama television series that aired on Fox from September 16, 2013 to March 31, 2017.
 The series is loosely based on the 1820 Halloween short story "The Legend of Sleepy Hollow" by Washington Irving with added concepts from "Rip Van Winkle", also by Irving.
 The series is initially set in real-life Sleepy Hollow, New York, although it portrays the town as much larger than it actually is.
 For the fourth and final season, the setting moved to Washington, D.C.
The Legend of Sleepy Hollow is a 1980 television film on NBC filmed in Utah, loosely based on Washington Irving's short story.
 It starred Jeff Goldblum as Ichabod Crane, Meg Foster as Katrina von Tassel, and Dick Butkus as Brom Bones.
 The film is also known as "La leggenda di Sleepy Hollow" in Italy.
 It was directed by Henning Schellerup.
 Executive producer Charles Sellier was nominated for an Emmy Award for his work on the movie.
.