Looking for any info on Ervin Arthur (sometimes went by E. A.) Nagel, born 1881 and died 1948 in Madison. He's listed in the Graceland Cemetery online.
He was married to Amy Poller and resided in Brookings. After their divorce, he may have married an Elsie Bertha Unzelman (I found a listing in 1939) and/or he may have married an Alice Gross (I found a listing in 1942).