There were 3 brothers who moved to Chicago, Ill. from Norway with last name Madsen. 1. Andros(Andrew), Anton, and another(first name started with "A",unk.) Information I found was that two of the Madsen's changed their last name because they all worked at Whiting Corp.Chicago,Ill. Owner said two needed to change last name to keep paperwork straight.Andrew Madsen kept his last name.Still unable to find out what the last names were changed to. Hope someone can shed some light on this?