[2] On 21 June 1327, Porse married Norwegian princess Ingeborg (1301–1361), daughter of King Haakon V of Norway (1270–1319).

Before marrying Duchess Ingeborg, Porse had led the troops that put a military end to the reign of her brother-in-law King Birger in 1318.

[5] Following his marriage to Ingeborg, Porse became duke of her extensive additional domains in Halland and Samsø.

In 1329, her authority was extended to the Duchy of Estonia, but Canute Porse died the year after that.

Porse and Ingeborg had two sons (below),[6] who lost their Scanian hundreds of Bjäre and North Åsbo in 1341,[7] but retained Halland till their deaths via the Black Death.