I am researching my GG and GGG grandfathers from Norway. However there have been 2 different last names that have popped up on documents for my GGGGrandfather. My GGrandfather, Louis W. Hogan Louis was born in Bergen, Norway 18 May, 1850. He immigrated in 1869 to Wisconsin. On 29 Feb 1880 he married Nicolene Anderson in Crawford County, Seneca, Wisconsin. On the marriage certificate Louis Hogan's father and mother are listed as Hogan Swanson and Sarah Swanson both born in 1828 in Norway. It is not known if they too are are from Bergen or if the immigrated with Loius. On Louis W. Hogan's death certificate his father is listed as Haaken Kleeve and his mother Sarah -----, no maiden name given. Loius died 8 May, 1910 in La Crosse, Wisconsin where he is buried. I am so confused. Can anyone help me understand what these last names mean or how Hogan became my last name??? I am desperately looking to find out more on my mysterious GGGGrandfather.
Thankyou in advance!