"Jon M. Christenson of Northwood, Ia"

I am from Danish and Swedish parents. I am most interested in findind whatever information about my Ancestry as I possibly can.
I have at this time very limited information. There are a great deal of unknowns.I need to know if I still have people in Denmark as well as Sweden. The information that I have from Denmark is more up to date than what I have obtained from Sweden.
To begin with my Grandfather is Martin Andersen Christensen he was born in Mygdal parish in Northern Jutland, Denmark on September 14, 1872 he had a twin brother named Christian Edvard Christensen but I do not have any further information on Christian whether he lived a full life or not. Martin married Sorine Kristine Jensen on August 5, 1898 in Fredrikshaven, Denmark. Sorine was born February 1, 1874 in Hornby parish, northern Jutland, Denmark. Martin and Sorine came to the USA in 1902 and settled in Geneva, Minnesota.