The 1930 US Census lists Arthur LeRoy Arndt living with his aunt and uncle, Mary (Arndt) and Wallace L. Toole and their daughter Alfa. They are listed on lines 65 - 68 of the census. The Toole family were living in South Haven township, Van Buren county, Michigan. I do not know why Arthur didn't live with his mother though it may have had to do with economics. This census was taken the year following the Great Depression of 1929. Arthur was the son of Linnie (Vallem) and David Andrew Arndt, the grandson of Rachel (Finnestad) and Lewis Vallem and great-grandson of Mari (Iversdatter Nord-Skaar) and Ole (Olson) Finnestad Sr.
Genealogical site for the descendants of Ole Oleson (Olson/Olsen) Finnestad from Stavanger, Norway. Contact me for the most comprehensive copy of the Finnestad family tree.