Hi Jay, I am related to Anna Magnusson, wife of PA Johnson aka Isaacsson. I have been in contact with Kajsa and we have shared info re the family. I was able to search Swedish records and did find PA's info and indeed he was originally an Isaacsson! If you would like the info I have I would be happy to share. I found the records of the quads birth on an LDS site. If you have family stories I would love to hear them.
Ellen in Oak Brook, IL