Question: What date did Bagsecg die?

Context paragraphs:
Battle of Ashdown: The Battle of Ashdown, in Berkshire (possibly the part now in Oxfordshire), took place on 8 January 871.  Alfred the Great, then a prince of only 22, led the army of his brother, King Ethelred of Wessex, in a victorious battle against the invading Danes.

The Settlers: Rise of an Empire: The Settlers: Rise of an Empire (original German title: "Die Siedler - Aufstieg eines Königreichs"), a real-time strategy video game, the sixth game in "The Settlers" series.  It was developed by Blue Byte and published by Ubisoft, with a US release date of September 25, 2007, a European release date of September 28, and an Australian release date of September 30.  A Limited Edition is also available, containing additional in-game content (including statues and a pavilion), an art book, bonus DVD, original soundtrack, technology tree sheet, and a demo CD.

Die Pyramide: Die Pyramide ("The Pyramid") is a high-rise building built in 1994/95 and located in the Berlin region of Marzahn-Hellersdorf, district of Marzahn, at the Rhinstraße / Landsberger Allee intersection.  The office building and adjacent outbuildings have a combined floor space of 43,800 square metres.  Die Pyramide was built by the Fundus-Gruppe real estate company of Düren and cost approximately €145 million to build.  The official completion date was 17 January 1995.  At a height of 100 meters, it is the tallest building in the suburb.

Visions (Atreyu album): Visions is the debut release of American metalcore band Atreyu.  It is a seven-track EP and was released during 1999 although the exact release date is unknown, as no confirmation on the EP's release date has been made.  It is suspected that the EP was sold at the band's local shows and, as a result, is currently very difficult to find.  It was released through Die Trying Records, Yorba Linda, California independent label.  As heard on this EP, much of their earlier sound is influenced by hardcore punk music.  Unlike every other Atreyu album, Brandon Saller does not sing on the album in addition to playing drums.

Pentium D: The Pentium D brand refers to two series of desktop dual-core 64-bit x86-64 microprocessors with the NetBurst microarchitecture, which is the dual-core variant of Pentium 4 "Prescott" manufactured by Intel.  Each CPU comprised two dies, each containing a single core, residing next to each other on a multi-chip module package.  The brand's first processor, codenamed Smithfield, was released by Intel on May 25, 2005.  Nine months later, Intel introduced its successor, codenamed Presler, but without offering significant upgrades in design, still resulting in relatively high power consumption.  By 2004, the NetBurst processors reached a clock speed barrier at 3.8 GHz due to a thermal (and power) limit exemplified by the "Presler's" 130 watt thermal design power (a higher TDP requires additional cooling that can be prohibitively noisy or expensive).  The future belonged to more energy efficient and slower clocked dual-core CPUs on a single die instead of two.  The final shipment date of the dual die "Presler" chips was August 8, 2008, which marked the end of the Pentium D brand and also the NetBurst microarchitecture.

Die Firma: Die Firma is a hip hop group formed in 1996 in Cologne, Germany.  The group consists of Tatwaffe (Alexander Trabhoven), Def Benski Obiwahn (Ben Hartung) and Fader Gladiator (Daniel Sluga).  To date, they have released six albums.  Their second album already sold over 80.000 copies in Germany and reached number 8 on the German album charts.  But they are best known for their year 2005 hit “Die Eine” (“The One”), which peaked at number 2 on the German single charts.  The band refers to its own style as: “Lyrics about beats which represent good and evil.”

Fino + Bleed: Fino + Bleed is a studio album by the Canadian punk rock band Die Mannequin, released on September 8, 2009.  "Fino + Bleed" is Die Mannequin's first true studio album because their previously released studio album "Unicorn Steak" is a compilation of their first two EPs, "How To Kill" and "Slaughter Daughter".  There is also a deluxe CD/DVD version of the album with the DVD containing the Bruce McDonald directed "The Raw Side of…Die Mannequin".  The original release date was set for August 25, 2009 but was pushed back to September 8, 2009 in order to accommodate the addition of the documentary.

Duplex canceller: A duplex canceller was a hand stamp used to cancel postage stamps and imprint a dated postmark applied simultaneously with the one device.  The device had a steel die, generally circular, which printed the location of the cancel, together with the time and date of cancel.  This die was held in place by a handle with an obliteration marker, often oval shaped, off to the right side that was applied over the postage stamp to prevent its reuse.  The ink came from an ink pad.

Bagsecg: Bagsecg (also known as Bægsecg or Bagsec) (died 8 January 871) was a Viking leader commonly referred to as a king.  In 870 or 871 he led The Great Summer Army to England.  His forces joined those of the Great Danish Army which had already overrun much of England.  He and Halfdan Ragnarsson became the leaders of a joint invasion of the Kingdom of Wessex.  He was killed at the Battle of Ashdown, fighting a West Saxon Army led by King Ethelred and his younger brother, the future Alfred the Great.

Die (album): Die!  is the sixth album by the rapper Necro.  "Die!"  was initially alluded to on Necro's MySpace profile as a "brand new solo album coming September 2009"; however, on August 13, the page's header was updated with an announcement of the album's title and its release date, which was put back to May 2010.  "Die!"  was Necro's first album since "Death Rap" in 2007 and was released by Psycho+Logical-Records.  The album's release date was finalised when the album cover was released on March 25, 2010.

Supporting paragraphs: Bagsecg Battle of Ashdown
Answer: 8 January 871