King Sverker II of Sweden was defeated at the Battle of Lena by Eric Knutsson, who succeeded to the throne.

Sverker the Younger, also known as Sverker II or Sverker Karlsson, was King of Sweden from 1195 or 1196 to 1208 when he was defeated in the Battle of Lena by Erik Knutsson. Sverker died in the 1210 Battle of Gestilren where his forces battled those of King Erik Knutsson.

The Battle of Lena occurred on 31 January 1208 and probably took place near Kungslena, in the Tidaholm Municipality in Västergötland, Sweden. It was an important battle between the Danish-backed King Sverker II of Sweden and Prince Eric. Eric's forces won a crushing victory; however, in July 1210, Sverker returned with a second army and was killed in the Battle of Gestilren.

Erik Knutsson, sometimes known as Eric X, was King of Sweden between 1208 and 1216. Also known as Erik the Survivor, he was, at his accession to the throne, the only remaining son of King Knut Eriksson and his queen, whose name may have been Cecilia.