...he met the artist Karin Bergöö, who soon became his wife. This was to be a turning point in Larsson's life. In Grez, Larsson painted some of his most important works, now in watercolor and very different from the oil painting technique he had previously employed.
Carl and Karin Larsson had eight children (Suzanne (1884), Ulf (1887, who died at 18), Pontus (1888), Lisbeth (1891), Brita (1893), Mats (1894, who died at 2 months), Kersti (1896) and Esbjörn (1900)) and his family became Larsson's favorite models. Many of the interiors depicted were the work of Karin Larsson, who also worked as an interior designer.
In 1888 the young family was given a small house, named Little Hyttnäs, in Sundborn by Karin's father Adolf Bergöö. Carl and Karin decorated and furnished this house according to their particular artistic taste and also for the needs of the growing family.
(https://howlingpixel.com/wiki/Carl_Larsson)