Lorenz Heggen, Kristian, Kristoffer, Emigr 1894

Would appreciate any assistance with locating a family that emigrated together in 1894, Norway to North Dakota. I suspect that the reason that I'm stuck is that they may have taken the farm name "Heggen" when they emigrated ... the only "Heggen" I find anywhere in the Norway records is a farm name. Lorenz Heggen, b. abt 1853 father Marie b. abt 1855 (Marriage possibly abt 1878) Kristian, son, b. abt 1879 Kristoffer L., son, b. Nov 11, 1883. Anna M., b. abt 1887 Laura E., b. abt 1890 Ole, b. about 1892 Not much to go on, I know! The only two slight possibilities I found are in the 1865 Census: Lorenz Lars. 10 years old Lorenz Kaspersen, 11 years old But haven't been able to tie them to a Heggen farm. Any shove in the right direction would be very much appreciated!