Hi,
I am back from Swenson. I did not find anybody named Kilgren in the Florence Wisconsin churches [Bethlehem Lutheran and lst Covenant].
I also checked heritage cd for 1910 census and found a couple of Kilgren ppl nearby.
Kilgren, Charles age 52 in Dickinson Co, Mich.
Kilgren, Peter age 29 in Stambaugh Twp, Iron Co, Mich. This one matches with Per found by Ted so I thought it a good idea to check Grace Covenant Church in Stambaugh MI. Unfortunately, no Kilgrens are listed.
I don't think Charles fits your family but this guy Peter might.
Chuck