“To Pennsyvania (Philadephia area) and Delaware. Of course they changed their language within a couple of years because first they were conquered by the Dutch and then by the english. The English caused them all to change their names and naming system. That was a pretty big change.”
That may have been so for Pennsylvanie and Delaware, and the 1600s contingent.
However more widely for Sweden and the Minnesota contingent (far bigger) the fade out of patronymic naming began in the late 1800s, both in America and in Sweden.
My greatgrandfather, born 1845 was the last generation with patronymic surname.
His sons and daughters kept his surname, instead of the old tradition.
The British forced the change on both the Dutch and the Swedes in the late 1700s. My 9th ggrandfather changed his from Petersson to Longacre. Nobody really knows why — whether it was because a) there were already too many Peterssons in the colony, b) it was a joke because his land extended down the center of a long, skinny island, or c) it was to honor his English brother-in-law whose name was Longshore and who owned the piece of land next to him.
But, the result of that change meant that a good many of his descendents lost all memory of their Swedish heritege. My 10th ggrandfather emigrated here about 1648. In fact, he came twice. Went back to Europe to collect his pay check and marry a wife to bring back to PA. He came on the Kalmar Nykkel on one of those trips.
My grandfather was born in 1883, the son of Henrik Johansson. Thus his name was Karl Henriksson. But that was the generation when the patronymic switch stopped. All the family in Sweden then stuck with Henriksson.