Carl Larsen

I am also interested in obtaining information on my grandfather, Carl Larsen. He came from Denmark but came to the Chicago area as that was where his sister Elsa and Mads Jensen and brother Peter lived. Peter and Carl's last name in Denmark was Pederson but dropped the Pederson when they came to America and went by Larsen. Is there any info on Else and Mads and where would I look to find the ship on which he would have emigrated. I believe he came in 1889. I know that he is not of Norwegian descent but married my grandmother, Lena Gaard, who was Norwegian. I think they would have met in the Kendall, Illinois area as that is where he became a naturalized citizen. They then moved to southern Minnesota around 1900. Again, I appreciate any information you can give me. Carol Dahl