I'm checking out old posts and came across this one. The Frank Kalanquin you're referring to is the son of Julius and Mary Kalanquin. The only information I've found on him is that he married Harriet (my records say McLean but yours say Welch-was that her maiden name?). According to the 1900 Illinois fed. census, she was his landlord and by the 1920 Illinois census they were married. He died 15 May 1929 in Highland, Madison, Illinois and she died 8 Apr 1928 in Pocahontas, Bond, Illinois. I don't believe they had any children.