WHAT'S IN A NAME?
It was a common practice in Sweden to "affix a son" to the first name of the father to become the last name of the son, i.e. the son of John became Johnson, the son of Peter became Peterson and so on. However, it is not that simple because some first names are not used in this manner. Also, there is an abundance of Andersons, Johnsons, Johansons, Petersons, etc. and the children are given all together different names, i.e. Borgstrom.
It is interesting to note that the children of Otto and Alma Nystrom retained the name Nystrom.
From what I have been able to research (and I'm not 100% sure on this) but the girls, Clara, Anna, Alma and Tilda, retained the name of Anderson. I suppose they figure it will be changed by marriage anyway.
It is interesting and it is most confusing.
Sven-Erik Svartmark, the son of August and Tilda Johanson, told me he wanted them to give him the name Borgstrom, but they refused.