I have an immigrant who was born in Sweden as Fredrik Magnusson.
His name is listed as Fredrik Magnusson in the Sweden, Indexed Birth Records, 1859-1947.
In the Sweden, Emigrants Registered in Church Books, 1783-1991 he is listed as Fredrik Persson. He left Skaraborg (Västra Götaland), Amnehärad in 1888 and came to America.
In the Web: Minnesota, U.S., Marriages from the Minnesota Official Marriage System, 1850-2019 he is listed as Fred Peerson.
He is listed as Fred Peerson on the 1950 U.S. Census.
His death certificate has Fred Peerson.
His gravestone has Fred Peerson.
So how does the name change from Magnusson to Peerson?
Edited: added link to newly created profile for Fredrik Persson