As for Persdotter I have the following names in tree:
Anna Maria b. 1786, Brita b. 1748, Lena b. 1786 and Maja (Maria) b. 1830. Maja married Johan August Isberg. All of the Isberg's are related, because it was a unique name adopted by 2 brothers from the name of a town in Sweden Isberga where they were stationed to guard a fort. Not sure if this helps. But I got this info from a relative in Sweden. You can email me at
herbstdi@aol.com.
Diana Isberg Herbst