After reading this thread I thought I might share my portion of the Tjernstrom tree.
My maternal great grandmother was Leontina Tjerstrom Johnson who was born in 1880 in Sweden most likely in Arnas, Vasternorrlands. According to the 1890 Swedish census the family lived in Arnas in a community called Alne, Ansag. Her father was Olof Tjernstrom born 1848 in Anundsjo, Westernorrlands. Her mother was Erika Karolina Ersdotter born 1845 in Grunsunda, Vasternorrlands. She had eight brothers and sisters:
Sara Kristina b 1873
Anna Karolina b 1875
Frans Orlof b 1878
Edla Maria b 1879
Oskar b 1884
Viktoria b 1884 (Oskar and Viktoria were twins)
Adolf b 1887
Albertina b 1890
My great grandmother emigrated from Sweden to the US along with Oskar, Viktoria, Adolf, and Albertina in or about 1902. I believe all settled in Minnesota in Becker County (the Detroit Lakes area). Leontina married my great grandfather, August William Johnson 1874-1952, both residing, until their deaths,in Detroit Lakes, Becker County, Minnesota.
Their mother's(Erika Karolina Ersdotter)family tree was a shroud of mystery. She apparently was on a ship that ran aground off the coast and my great grandfather was part of the rescue party. They eventually married. The rumor was that she came from Middle East and her last name was actually Blum or Bloom. The name she had taken in Sweden may have been the family that took her in after the shipwreck. Apparently the family here in the United States was sworn to secrecy as to this day we do not know who Erika Ersdotter really was, where she came from, and who her parents were.
If anyone can help with Olof Tjernstrom family tree I'd appreciate any information. The name Tjernstrom appears to be common to the area but not having access nor translating Swedish, it's been kind of tough moving backward from 1890.
Thanks in advance