Hi @jsindler,
While seemingly a simple request/question, there are a lot of variables at play when it comes to preferred name (and/or pronouns). I have some followup questions that might help identify the best past forward
1 - Do you use an institution/school instance of Canvas, or the "free for teacher" version?
2 - If using an institution instance, are you an admin or a teacher for that instance?
3 - Is using an institution instance, do you know if you have a student information system that syncs with Canvas to populate user accounts, courses, etc?
If you get back with the answers to these questions, we can probably guide you on the best path forward or at least identify what the options would be.
-Chris