Eric was born c. 1290 as the only legitimate son of Duke Valdemar IV of Schleswig in his first marriage with Elisabeth of Saxe-Lauenburg, a daughter of John I, Duke of Saxony. Already during the lifetime of Valdemar IV, he acted as his father's coruler and used the title of duke.
Eric I Abelsøn (Danish: Erik 1. Abelsøn af Danmark) (died 27 May 1272) was a Danish nobleman.He was the ruling Duke of Schleswig from 1260 until his death in 1272. He was the second son of King Abel of Denmark, Duke of Schleswig and Mechtild of Holstein
Schleswig Cathedral seven children: Duke-King of Schleswig-Denmark. Valdemar IV: c.1265: 1283-1312: 26 March or 7 July 1312: Estridsen: Elisabeth of Saxe-Lauenburg 1287 one child: Eric II: c.1290: 1312-1325: 12 March 1325: Estridsen: Adelaide of Holstein-Rendsburg 1313 two children: Gerhard III, Count of Holstein-Rendsburg (regent)
Eric II, Duke of Schleswig. Quite the same Wikipedia. Just better.
In 1287 Duke Valdemar married Elisabeth of Saxe-Lauenburg, a daughter of John I, Duke of Saxony. This marriage produced the only legitimate son of Duke Valdemar: Eric II (c. 1290 – 1325), Duke of Schleswig 1312–1325; In 1306 he married Anastasia of Schwerin, a daughter of Niklot I, Count of Schwerin. Ancestry
Eric V of Saxe-Lauenburg (died 1436) was a member of the House of Ascania; son of Duke Eric IV of Saxe-Lauenburg and Sophia of Brunswick-Lüneburg. Eric V and his brother John IV jointly succeeded their father in 1412 as dukes of Saxe-Lauenburg. After John IV had died in 1414, Eric ruled alone.
Frederick, Duke of Schleswig-Holstein-Sonderburg-Norburg (26 October 1581 – 22 July 1658), married on 1 August 1627 to Juliana of Saxe-Lauenburg, daughter of Francis II, Duke of Saxe-Lauenburg. Margarete of Schleswig-Holstein-Sonderburg (24 February 1583 – 10 April 1638), married on 27 February 1603 to John VII, Count of Nassau-Siegen .
On the death of King Valdemar's descendant Eric VI of Denmark in 1319, Christopher II of Denmark attempted to seize the Duchy of Schleswig, the heir of which Duke Valdemar V (as of 1325) was a minor; but Valdemar's guardian and uncle, Gerhard III, Count of Holstein-Rendsburg (1304–1340), surnamed the Great and a notable warrior, drove back ...
Eric V of Denmark - Matilda of Holstein - Christopher I of Denmark - Abel, King of Denmark - Valdemar III, Duke of Schleswig - Valdemar IV, Duke of Schleswig - Eric Longlegs, Lord of Langeland - Jaromar II, Prince of Rügen - Helmold III, Count of Schwerin - Jutta of Saxony - Duchy of Schleswig - Roman Catholic Diocese of Roskilde - Copenhagen - Margaret Sambiria - Regent - Gottorf Castle ...
Tatălui lui Valdemar a fost Ducele Eric al II-lea de Schleswig și mama sa a fost Adelaide, fiica lui Henric I de Rendsborg. Când ruda sa îndepărtată și șeful filialei regelui rival Christopher al II-lea al Danemarcei a fost exilat din regatul său ,Holsteiner și nobilii danezi au fost nevoiți să aleagă un nou rege.