The northern parts were eventually settled by Savonians and in 1561, the area became the Rautalampi parish which included most of modern Central Finland north of the Päijänne; from Toivakka to Pihtipudas.

It was replaced by a Savonian dialect soon after Ivar Tawast killed 400 peasants from Sysmä, Jämsä and Kuhmoinen in Padasjoki during the Cudgel War.

[7] Sysmä was also occasionally known in documents as Sysmäki due to association with the word mäki (hill), compare Kärsämäki which used to be Kärsämä.

At the time, the Hartola parish also included Joutsa, Luhanka, Leivonmäki and the western part of Pertunmaa.

[9] Joutsjärvi, Karilanmaa, Kinnarila, Koivisto, Liikola, Nikkaroinen, Nuoramoinen, Onkiniemi, Otamo, Rapala, Ravioskorpi, Taipale, Unaja, Valittula, and Vintturi.