Question: Eric II of Denmark was the illegitimate son of a king born in what year?

Context articles: Charles Webber (priest)
Frederick of Pettorano
Hugh of Saxony
Treaty of Soldin (1466)
Ruaidhrí Mac Ruaidhrí
Eric II of Denmark
Eric II, Duke of Saxe-Lauenburg
Eric I of Denmark
Eric III of Denmark
Niels, King of Denmark

Baptised on 17 May 1762 in the church of All Saints in Chichester, he was the eldest surviving son of the Reverend William Webber (1724–1790), a canon of Chichester Cathedral.
 The Canon's father, Robert Webber, was said to be an illegitimate son of Charles Lennox, 1st Duke of Richmond, himself an illegitimate son of King Charles II, while the Canon's mother was Mary Maybank, reputedly a descendant of Louise de Kérouaille, Duchess of Portsmouth, a mistress of King Charles II.
 William's mother had less elevated but wholly legitimate origins, being Anne Smith (1731–1806), daughter of John Smith, a surgeon in Chichester, and his wife Sarah Buckenham.
 Among his uncles were Rear-Admiral Charles Webber (1722–1783), nominal father of Lieutenant-General James Webber Smith, as well as the rector of West Stoke outside Chichester, the Reverend Charles Smith (1729–1803).
 His younger brother, the Reverend James Webber (1772–1847), became Dean of Ripon.
Frederick of Pettorano ("c".
 1212/3 – after 1240) was the eldest illegitimate son of Frederick II, king of Sicily and Germany.
 He was born on Sicily to an Italo-Norman noblewoman after his father's first marriage to Constance of Aragon.
 This mistress's name is unknown, but she came from a family of Norman counts on Sicily and had a relationship with the teenage Frederick between 1211 and 1212.
 Their relationship ended when King Frederick went to Germany and in 1213 took up with another woman, a certain Adelaide.
 Besides Frederick of Pettorano, Frederick II probably named two other sons after himself: another illegitimate son, Frederick of Antioch, and a legitimate son by his wife Isabella.
 This last is known only by the initial "F." and died young.
Hugh of Saxony or Hugh de Saxony(ca. 850 – 880) was a Frankish prince, a member of the Carolingian dynasty.
 He was born in Saxony around 850, the illegitimate son of Louis the Younger, and an unnamed concubine.
 It is possible he was also the brother of another illegitimate son, Bernhard.
 He was born during the reign of his grandfather Louis the German.
The Treaty of Soldin (German: "Vertrag von Soldin" ) was signed on 21 January 1466 at Soldin (now Myślibórz) by the Brandenburgian elector Frederick II and the Pomeranian dukes Eric II and Wartislaw X.
 It was mediated by the town of Stettin (now Szczecin).
 The treaty temporarily settled a conflict about the succession of Otto III, Duke of Pomerania, who had died without issue: Emperor Frederick III, elector Frederick II as well as Eric II and Wartislaw X of Pomerania claimed to be the rightful heir of Otto's share of the Duchy of Pomerania.
Ruaidhrí Mac Ruaidhrí (died 14 October 1318?)
 was a fourteenth-century Scottish magnate and chief of Clann Ruaidhrí.
 He was an illegitimate son of Ailéan mac Ruaidhrí, and is recorded to have participated in the kindred's military actions against supporters of both the English Crown and Scottish Crown.
 Following the apparent death of his brother, Lachlann, Ruaidhrí appears to have taken control of the kindred, and firmly aligned the family with Robert I, King of Scotland.
 Ruaidhrí may well be the member of Clann Ruaidhrí who is recorded slain at the Battle of Faughart in support of the Bruce cause in Ireland.
 After his death, Ruaidhrí's half-sister, Cairistíona, attempted to transfer the Clann Ruaidhrí territories outwith the family.
 Ruaidhrí was survived by a daughter, Áine, and an illegitimate son, Raghnall.
 The latter fended off Cairistíona's actions and succeeded to the chiefship of Clann Ruaidhrí.
Eric II the Memorable (Danish: "Erik II Emune" ) (  1090 – 18 September 1137) was king of Denmark between 1134 and 1137.
 Eric was an illegitimate son of Eric I of Denmark, who ruled Denmark from 1095 to 1103.
 Eric the Memorable rebelled against his uncle Niels of Denmark, and was declared king in 1134.
 He punished his adversaries severely, and rewarded his supporters handsomely.
 He was killed by a subject in 1137 and was promptly succeeded by his nephew Eric III of Denmark.
Eric II of Saxe-Lauenburg (1318/1320 – 1368) was a son of Duke Eric I of Saxe-Lauenburg and Elisabeth of Pomerania (*1291–after 16 October 1349*), daughter of Bogislaw IV, Duke of Pomerania.
 Eric II succeeded his father, after his resignation in 1338, as duke of Saxe-Ratzeburg-Lauenburg, a branch duchy of Saxe-Lauenburg.
Eric I (  1060 – 10 July 1103), also known as Eric the Good, (Danish: Erik Ejegod ), was King of Denmark following his brother Olaf I Hunger in 1095.
 He was a son of Sweyn II.
 His mother's identity is unknown.
 He married Boedil Thurgotsdatter.
Eric III Lamb (Danish: "Erik III Lam" ) (  1120 – 27 August 1146) was the King of Denmark from 1137 until 1146.
 He was the grandson of Eric I of Denmark and the nephew of Eric II of Denmark, whom he succeeded on the throne.
 He abdicated in 1146, as the first and only Danish monarch to do so.
 His succession led to a period of civil war between Sweyn III, Canute V, and Valdemar I.
Niels (Latin: "Nicolaus" , Engish exonym Nicholas;  1065 – 25 June 1134) was the King of Denmark from 1104 to 1134.
 Niels succeeded his brother Eric Evergood and is presumed to have been the youngest son of King Sweyn II Estridson.
 King Niels actively supported the canonization of Canute IV the Holy and supported his son Magnus I of Sweden by killing the potential successor Knud Lavard.
 His secular rule was supported by the clergy.
 Niels was killed in an ensuing civil war, and his successor was Eric II Emune.