Yes, Martin did end up in Eagle Grove Iowa.I have found his gravesite. According to the family tree book I have, Martin had a brother Gulbrand(Gilbert) born in 1842.Gulbrand and Elsie Gubrianson?? (later changed to Thompson) lived in Lake Preston, South Dakota. Martin had other siblings, Halver born in 1832 in gran.He was a farmer in Moody County South Dakota and retired in Lake Preston, South Dakota. Hans born in 1843 and ended up in Thor Iowa and I have found his gravesite.Iver died in infancy. Mary born in gran, 1845, married Adreas Minde of Ransford, Norway and operated a glass factory. Later they moved to Vien and then to Oldhaugen. Gunhild born in gran, 1849, married Hans Olson. Located in Lake Preston, South Dakota in the 1890's.
I know some names and dates are not completely correct and I am trying to pieces of the puzzle together. Thanks for you help, Mary Jane