We might have a connection.I just recieved a family tree of sorts from my great uncle Vincent Dahlgren from Timber Lake, South Dakota. According to our records, my great uncle Vincent is the son of Herbert Jonas Dahlgren born in Liberty Township Cherokee Co. IA in 1891. Herbert was the son of Jonas Dahlgren born in Bishop Hill, IL. in 1854. Jonas was the son of Hans Larson Dahlgren born in Ostra Dalarna Sweden in 1822.Hans's wife was Maria Olson and they were married in Bishop Hill, IL. in 1848.
Your info and my info are a little different, but in sounds like we might be talking about the same people.It's fairly likely that our information is a little inaccurate, but I do have 23 pages of it.I'm curious if we're tracing the same people.