Is this your Nelle?

Michigan Deaths, 1971-1996
about Nelle Mann
Name: Nelle Mann
Birth Date: 1 Sep 1903
Death Date: 14 Feb 1976
Gender: Female
Residence: Detroit, Wayne, Michigan
Place of Death: Detroit, Wayne, Michigan

Michigan Death Index is on Ancestry.com for years 1971-1996. Since Hobert died in 1960, you'd have to order his death certificate from State of Michigan. Here's the url to download the application:
"http://www.michigan.gov/documents/deathapp_6467_7.pdf". Another useful tool is a copy of his original application for a social security number. The parents' names are usually listed on it AND the place of residence at the time the application was completed.

Were they married in Michigan? If so, here's the url to order a copy of the marriage record:
"http://www.michigan.gov/documents/marriapp_6486_7.pdf". Witnesses on these records are usually relatives. Those names could help.

Do you know Hobart's date, place of birth? Did he have siblings? Likewise for Nelle. Many times family members can be found living near each other on census records. Please give a little more info. Thanks.

Georgia Walker-Adams