You are correct it was William Burlingame who was married to Lucy Jane Holvenstot. I was confused when I said his name was George. William Burlingame did indeed die 28 Aug 1899 in MN.

Your index card is very helpful, I did not know Lucy's date of birth before this. Also its helpful that it shows her fathers name as John "Halverstat" because I suspect Holvenstot is a variation of this name.

Thanks for the info about Lucy's children and for the obit. It's a great help and fills in some blanks for me.