Question: The King that led the English in the Battle of Tempsford was born in which year?

Context paragraphs:
Battle of Qarqar: The Battle of Qarqar (or Ḳarḳar) was fought in 853 BC, when the army of Assyria led by king Shalmaneser III encountered an allied army of eleven kings at Qarqar, led by Hadadezer (also called Adad-idr and possibly to be identified with Benhadad II) of Damascus and King Ahab of Israel.  This battle, fought during the 854 BC–846 BC Assyrian Conquest of Syria, is notable for having a larger number of combatants than any previous battle, and for being the first instance in which some peoples enter recorded history (such as the Arabs).  The battle is recorded on the Kurkh Monolith.  The ancient town of Qarqar at which the battle took place has generally been identified with the modern-day archaeological site of Tell Qarqur near the village of Qarqur.

Edward the Elder: Edward the Elder (Old English: "Eadweard cyning "; c. 874 – 17 July 924) was King of the Anglo-Saxons from 899 until his death.  He became king in 899 upon the death of his father, Alfred the Great.  He captured the eastern Midlands and East Anglia from the Danes in 917 and became ruler of Mercia in 918 upon the death of Æthelflæd, his sister.

Battle of the Nervasos Mountains: The Battle of the Nervasos Mountains (Spanish: Batalla de los Montes Nervasos) occurred in the year 419 and was fought between a coalition of Suebi, led by King Hermeric together with allied Roman Imperial forces stationed in the Province of Hispania, against the combined forces of the Vandals and Alans who were led by their King Gunderic.  This battle occurred in the context of a contemporary Germanic invasion of the Iberian Peninsula.  The battle took place in what is today the Province of León, Spain, and resulted in a Roman/Suebian Victory.

Battle of Tempsford: In 917, the group of Danes who had previously been based in Huntingdon relocated to Tempsford, together with other Danes from East Anglia.  They built and fortified a new "burh" there, to serve as a forward base for attacks on English territory.  Later that year, after launching an unsuccessful attack on Bedford, they were attacked by an English army led by King Edward the Elder, as part of his widespread offensive which in that year overwhelmed the Danish territories in East Anglia and south-eastern Mercia.  The "burh" was stormed and a Danish king, probably that of East Anglia, was killed, along with the Jarls Toglos and Manna and many of their followers, while the rest were captured.

Battle of Shrewsbury: The Battle of Shrewsbury was a battle fought on 21 July 1403, waged between an army led by the Lancastrian King Henry IV and a rebel army led by Henry "Harry Hotspur" Percy from Northumberland.  The battle, the first in which English archers fought each other on English soil, demonstrated "the deadliness of the longbow" and ended the Percy challenge to King Henry IV of England.

Battle of Stamford Bridge: The Battle of Stamford Bridge took place at the village of Stamford Bridge, East Riding of Yorkshire, in England on 25 September 1066, between an English army under King Harold Godwinson and an invading Norwegian force led by King Harald Hardrada and the English king's brother Tostig Godwinson.  After a bloody battle, both Hardrada and Tostig along with most of the Norwegians were killed.  Although Harold Godwinson repelled the Norwegian invaders, his army was defeated by the Normans at Hastings less than three weeks later.  The battle has traditionally been presented as symbolising the end of the Viking Age, although major Scandinavian campaigns in Britain and Ireland occurred in the following decades, such as those of King Sweyn Estrithson of Denmark in 1069–1070 and King Magnus Barefoot of Norway in 1098 and 1102–1103.

Sen Soulintha: Sen Soulintha, Saen Surintha or Sen Sourintha (1511–1582) was born Chane Tian and became King of Lan Xang reigning 1571-1575 and again 1580-1582.  Sen Soulintha was not of noble birth, rising from royal page to King Setthatirath’s Chief Minister.  During the succession disputes in the Kingdom of Lan Na between King Setthatirath and King Mekuti, Sen Soulintha served Setthatirath as a general and successfully took several cities of Lan Na including Chiang Saen for which he was given the honorific name "Lusai" meaning “victory.”  Sen Soulintha supported Setthatirath in leading the guerrilla campaigns during the Burmese invasions of King Bayinnaung.  When Setthatirath died near Attapeu under suspicious circumstances in 1572, Sen Soulintha led the armies of Lan Xang back to Vientiane.  A succession dispute erupted, which nearly led to civil war and provided a pretext for another Burmese invasion ordered by Bayinnaung and led by the Chief Minister Binnya Dala.  Sen Soulintha defeated the Burmese and Lan Na forces led by Binnya Dala, an event which led to the latter’s exile, only to face a more massive invasion led by Bayinnaug the following year.  Sen Soulintha again attempted to resort to guerilla tactics, but lacked popular support from his seizure of the throne.  He and his son Ong Lo (Nakhon Noi) were captured by Bayinnaung and exiled to Pegu.  The Burmese placed Setthathirath’s brother, and former "Ouphahat" or Viceroy, Prince Tha Heua on the throne.  According to the Luang Prabang chronicles it was this brother, who had led a rebellion in Luang Prabang and tried to seize the throne from Setthathirath on the death of their father Photisarath.  Prince Tha Heua took the regnal name Voravongsa and reigned under Burmese suzerainty from 1575-1579.  Voravongsa was never popular, and drowned with his family while attempting to flee Vientiane in the face of popular uprising.  In 1579, Bayinnaung dispatched a sizable army to restore order.  According to Lao histories Sen Soulintha was then installed as king a second time in 1580.  By that time Sen Soulintha was an old man and reigned only for two years before his son ascended the throne as Nakhon Noi and another succession dispute ensued.

Battle of the Burbia River: The Battle of Río Burbia or the Battle of the Burbia River was a battle fought in the year 791 between the troops of the Kingdom of Asturias, commanded by King Bermudo I of Asturias, and the troops of the Emirate of Córdoba, led by Yusuf ibn Bujt.  The battle occurred in the context of the Ghazws of Hisham I against the Christian rebels of the northern Iberian Peninsula.  The battle took place near the Río Burbia, in the area which is today known as Villafranca del Bierzo.  The battle resulted in Andalusian victory.

Battle of Callinicus: The Battle of Callinicus (Greek: μάχη του Καλλίνικου ) was fought in 171 BC between the Kingdom of Macedon and the Roman Republic near a hill called Callinicus, close to the Roman camp at Tripolis Larisaia, five kilometres north of Larissa, the capital of Thessaly.  It was fought during the first year of the Third Macedonian War (171-168 BC).  The Macedonians were led by their king, Perseus of Macedon, while the Roman force was led by the consul Publius Licinius Crassus.  The Macedonians were supported by Cotys IV, the king of the Odrysian kingdom (the largest state in Thrace) and his forces, by Cretan mercenaries and by auxiliaries of mixed nationalities.  The Romans had their Italian allies with them and were supported by soldiers provided by Eumenes II of Pergamon, as well as a force of Thessalian cavalry and Greek allies.  The battle saw the deployment of troops with cavalry intermixed with light infantry.  Although the battle was actually inconclusive because Perseus withdrew before it came to a conclusion, it was considered a Macedonian victory because the Romans suffered heavy casualties.

Battle of the Catalaunian Plains: The Battle of the Catalaunian Plains (or Fields), also called the Battle of the Campus Mauriacus, Battle of Châlons or the Battle of Maurica, took place on June 20, 451 AD, between a coalition led by the Roman general Flavius Aetius and the Visigothic king Theodoric I against the Huns and their vassals commanded by their king Attila.  It was one of the last major military operations of the Western Roman Empire, although Germanic foederati composed the majority of the coalition army.  Whether the battle was strategically conclusive is disputed: The Romans stopped the Huns' attempt to establish vassals in Roman Gaul, and installed Merovech as king of the Franks.  However, the Huns successfully looted and pillaged much of Gaul and crippled the military capacity of the Romans and Visigoths.  The Hunnic Empire was later dismantled by a coalition of their Germanic vassals at the Battle of Nedao in 454.

Supporting paragraphs: Battle of Tempsford Edward the Elder
Answer: 874