Question:  Sarah Crocker Conway leased a theater in which at least 278 individuals were killed on what date?

Context articles: Conway Bypass (New Hampshire)
Harold Crocker
Conway Tearle
Conway High School (Arkansas)
Brooklyn Theatre fire
Sarah Crocker Conway
Global Crossing
MV Sally Fox
Frederick B. Conway
Hugh Conway (Lord Treasurer)

The Conway Bypass is a proposed rerouting of New Hampshire Route 16 around the villages of Conway and North Conway.
 Though it has been in a proposal stage for decades, the project is still slowly moving forward.
 To date, multiple related early stage projects have been completed, including most recently upgrading North-South Road near North Conway.
After a successful career as a Queensland and then Australian international representative, in the 1954 pre-season Crocker signed a then record one-season deal for an Australian to move south and play for Sydney club Parramatta in order to assist his family who had lost their home in a fire the previous year.
 Parramatta finished the 1954 NSWRFL season with the wooden spoon however.
 In the post season Crocker was selected for the Australian national team's campaign for the 1954 Rugby League World Cup tournament, the first ever, which was held in France.
 Crocker didn't play in the Kangaroos' first match which was lost to Great Britain, but was selected as a second-row forward for the second match against New Zealand which Australia won.
 He played in the third match against France which the Australians lost, meaning they would fail to reach the final.
 He is listed on the Australian Players Register as Kangaroo No. 278.
 The following season was Crocker's last in the NSWRFL Premiership's first grade.
Frederick Conway Levy was born on May 17, 1878, in New York City, the son of the well-known British-born cornetist Jules Levy (1838–1903) and American actress Marianne “Minnie” Conway (1852–1896).
 Tearle also had a sister, and a half-brother, musician Jules Levy, Jr., from his father's previous marriage.
 Minnie's mother was stage actress Sarah Crocker Conway.
 Minnie Conway was a direct descendant of William Augustus Conway, a British Shakespearian actor who became popular in America during the 1820s.
 Her father, the proprietor of the Brooklyn Theatre, was said to have organized the first stock company in America.
 After Tearle’s parents separated, his mother married Osmond Tearle (1852–1901), a British Shakespearian actor popular in “the provinces”.
 Two half brothers, Godfrey and Malcolm Tearle, were born from Marianne's marriage to Osmond Tearle.
Conway High School is a comprehensive public school in Conway, Arkansas, United States.
 Conway High School serves over 2,000 students and is administered by the Conway School District.
 The school has been nationally recognized as a Blue Ribbon School of Excellence and since 1953 has won at least 33 state championships in interscholastic sports.
The Brooklyn Theatre Fire was a catastrophic theatre fire that broke out on the evening of December 5, 1876, in the then-city of Brooklyn (now a borough of New York City).
 The conflagration killed at least 278 individuals, with some accounts reporting more than 300 dead.
 One hundred and three unidentified victims were interred in a common grave at Green-Wood Cemetery.
 An obelisk near the main entrance at Fifth Avenue and 25th Street marks the burial site.
 More than two dozen identified victims were interred individually in separate sections at the Cemetery of the Evergreens in Brooklyn.
Sarah Crocker Conway (b. Ridgefield, Connecticut, 1834; d. Brooklyn, New York, April 28, 1875) was an actress.
 She was a sister of Elizabeth Crocker Bowers, also an actress.
 She made her debut in Baltimore, Maryland in 1849, playing Parthenia and other leading parts.
 In May 1852, she married the actor Frederick B. Conway, and the two thenceforward acted together.
 In 1859, they opened Pike's Opera House in Cincinnati, Ohio with a first-class company, but the engagement was not profitable, and they returned to the east.
 In 1861, they visited England, and filled a short engagement at Sadler's Wells Theatre, London.
 After their return, they became star actors, and made an extensive and profitable tour.
 In 1864 Sarah leased the Park Theatre in Brooklyn, and subsequently the new Brooklyn Theatre, in which for nine years her husband played leading parts.
 Sarah Conway possessed a tall and graceful figure and an expressive countenance, and was a versatile actress and a popular theatre manager.
Global Crossing (GLBC) was a telecommunications company that provided computer networking services worldwide and operated a tier 1 carrier.
 It maintained a large backbone network and offered transit and peering links, Virtual private network (VPN), leased lines, audio and video conferencing, long distance telephone, managed services, dialup, colocation and VoIP.
 Its customer base ranged from individuals to large enterprises and other carriers, with emphasis on higher-margin layered services such as managed services and VoIP with leased lines.
 Its core network delivered services to more than 700 cities in more than 70 countries.
Sally Fox is a passenger-only ferry built for the King County Water Taxi.
 The "Sally Fox" is 104 ft long and has a capacity of 278 passengers seated in two indoor decks and outdoor balconies.
 The aluminum catamaran was built in 2014 by All American Marine in Bellingham, Washington for $6.25 million, and is used primarily on the Seattle–Vashon Island route.
 The boat began operating on the Vashon route in April 2015, replacing two leased boats.
 The vessel was named for Sally Fox, a Vashon Island activist who fought for passenger ferry service to the island.
 It is the sister ship of the  , which entered service in 2016.
Frederick Bartlett Conway (b. Clifton, 10 February 1819; d. Manchester, Massachusetts, 6 September 1874) was an actor.
 He was the son of William A. Conway.
 He early developed a taste for the stage.
 After he had won a fair position in his profession in England, he came to the United States in August 1850.
 Here he formed an association with Edwin Forrest, and played Iago to his "Othello", de Mauprat to his "Richelieu", and other companion parts.
 After the death of his first wife, Mr. Conway married, in May, 1852, Sarah Crocker, a leading actress, and the two thenceforward acted together.
 In 1859 they opened Pike's Opera House in Cincinnati, Ohio with a first-class company, but the engagement was not profitable, and they returned to the east.
 In 1861, they visited England, and filled a short engagement at Sadler's Wells Theatre, London.
 After their return they became star actors, and made an extensive and profitable tour.
 Though somewhat pompous in manner, Frederick Conway was a good actor, with a fine personal appearance and a commanding delivery.
 He was the father of Marianne "Minnie" Conway and Lilian Conway.
 His grandsons, Minnie's sons, were actors Conway Tearle and Godfrey Tearle.
Sir Hugh Conway was created Lord Treasurer of Ireland in 1494 by King Henry VII of England.
 He replaced Sir James Ormonde as Lord Treasurer of Ireland.
 In 1504 he was appointed Treasurer of Calais by Henry VII ( Cal.
 Pat.
 Rolls Henry VIII, vol.
 ii, 365).
 Hugh Conway was an early supporter of Henry Tudor, Earl of Richmond (later Henry VII), was sent by Margaret Beaufort, Henry's mother to Henry, in exile in France, in 1483 with a large sum of money and encouragement to invade England through Wales and seize the crown from Richard III.
 Henry did so in 1485 and Richard was killed at the Battle of Bosworth, where Hugh was present.
 Hugh was appointed Keeper of the Great Wardrobe by King Henry VII on 21 September 1485, was knighted in January 1486 at the coronation of Queen Elizabeth of York, daughter of King Edward IV, and married Elizabeth Courtenay, daughter of Sir Thomas Courtenay, Earl of Devon, in 1490.
 Sir Hugh Conway was appointed Sheriff of Buckinghamshire and Bedfordshire by Henry VII in 1500.
 Sir Hugh was a son of John ‘ Aer Conwy Hen ’ of Bodrhyddan Hall and Constable of Rhuddlan Castle, Flintshire, Wales, by his first marriage, and descended from the ancient line of Conway (Conwy = Wales) and de Crevecouer (The Journal Of The Flintshire Historical Society (Appendix D: Conwy Pedigree (British Museum Harleian MS 1971))).
 Sir Hugh's younger half-brother was Edward Conway who married the heiress of Arrow and Alcester, Warwickshire, and was great-grandfather to Edward Conway, 1st Viscount Conway of Ragley Hall, ancestor of the present family of Seymour Conways, Marquis of Hertford.