Магнус Эрикссон
Bo Jonsson dominated the political life of Sweden and Finland for decades. He was the most influential representative to the council of aristocracy that deposed Magnus IV of Sweden in 1365 and installed Albrecht von Mecklenburg on the Swedish throne. His position as the new king's "Officialis Generalis" granted him vast fiscal and administrative control. By 1374, he had gained title to all of Finland.