I found some information, but it was different than what you have lsited. Here's what is listed on the SS index: Name:WILLIAM CROWDER SSN:342-03-2058 Last Residence:97470Roseburg, Douglas, OR Born:19 Sep 1916 Last Benefit:97470Roseburg, Douglas, OR Died:Mar 1981 State (Year) SSN issued:IL (Before 1951)
Name: Crowder, William Woo County: Douglas Death Date: 14 Mar 1981 Certificate: 81-04167 Spouse: June Birth Date: 19 Sep 1916
Have you tried ordering his Social Security application? That should tell who both of his parents were.
Here's his wife's info: Name: Crowder, June Ele County: Douglas Death Date: 23 Oct 1983 Certificate: 83-17863 Spouse: Willia Birth Date: 03 Jun 1921