Häme War

The Häme War (Swedish: Tavastehuskriget) was a war between Sweden and the Novgorod Republic spanning from the years 1311–1314.

Background
The Swedish eastern policy had become very passive because of the long fight between the Swedish king, Birger Magnusson, and his brothers Eric and Valdemar which had plagued Sweden since 1304. However, in 1311, the Novgorodians attack Finland and thus began a new conflict between Sweden and Novgorod.

1311
In the beginning of 1311, the Novgorodians, under the command of Dmitri Romanovich, attacked Tavastia. They quickly occupied the Kupets river after having crossed the sea and burned villages and captured the people living there. and after having gone along the coast they began marching towards Tavastehus. When a Swedish troop began pursuing the Novgorodians, the son of Ilya Stanimirovich, Konstantin, was killed. The Novgorodians would then occupy the entire "Black river" and then follow along this river to the fortress of Tavastehus.

Siege of Tavastehus
When the Novgorodians reached Tavastehus, they quickly captured the town, with the defenders falling back into the fortress. The forecourt was quickly razed by the Novgorodians due to it being made out of wood. The Swedish defenders asked the Novgorodians for peace, but the Novgorodians quickly refused. Instead, they initiated a siege of the fortress. The besieging Novgorodians had a hard time reaching the fortress itself, as it was built on a tall cliff. After a three-day long siege, the Novgorodians lifted their siege and began marching home.

The Dukes Eric and Valdemar took revenge for the attack by attempting to closing off the trade to Narva, but this ended in failure.

1312
In the beginning of 1312, a conflict between MIchael of Moscow and Novgorod broke out. In Sweden, however, the long lasting fighting between Birger and his brothers had ended, and Birger began establishing an expansive eastern policy. He thus decided to begin arming a new army for the following year.

1313
In 1313, an expedition under the command of Tuke Jonsson went towards the Ladoga region. Since the Ladoga posadnik along with the soldiers inside Ladoga had gone out to fight, the Swedes under tuke managed to burn down Ladoga. The Novgorod Chronicle describes the reason for this action as "for our sins"

1314
In 1314, rebels in Korela manage to take advantage of the crisis in Novgorod and they killed their Russian "oppressors" and called in the Swedes. However, soon afterwards, Jurij Danilovitj manages to crush the uprising and drive the Swedes away from Ladoga.

Aftermath
The following years would consist of relative calm and there are no indications of any fighting in 1315.