Mike Kusma

I am trying to find any information on my great grandfather, Mike Kusma. He immigrated to America from Trieste, Austria in 1888. Per family lore he stowed away on a boat that landed in Canada and went to Minnesota before coming to Colorado. There is a rumor that there might be a family in Minnesota that had a brother named Mike that went west and was never heard from again, any info would be greatly appreciated. I have pictures to share.