Mats Kettilmundsson
Mats Kettilmundsson was a Swedish riksdrots and who was head of government in Sweden under the short regency there of Duchess Ingeborg in 1318–1319.
As commander of the military in Swedish Finland, but against the wishes of the Swedish government, in 1325 he crossed the Gulf of Finland and attacked Tallinn, alleging that the city must be punished for executing four of his soldiers who had gone on a rampage there. He died the following year.
