When checking the census for your relatives, don't forget to check to see if there are state census records (as well as the federal census records). For example, here is a screenshot of the 1945 State of Florida Census for a portion of Crestview. My kinfolk, the Settles family, are listed here as the "Suttles". That spelling is not unusual and I see it quite often when I'm researching.
Thankfully, when you are using FamilySearch.org, your input for the search may be "SETTLES", but the default search engine at that web site will pick up other names that "sound like" the original query.