Other family/neighbors traveling at the same time

My ancestors, Erick Nielson on Stedje, wife Kari Johannesdatter and two children, Jens and Niels immigrated from Fosshaugen on April 7, 1856. I’m looking to find any additional relatives or neighbors that immigrated at the same time. This could help me find where they 'landed' and settled for the first decade. Thanks, Luella