The family of Ismail Al-Azhari, leader of Sudan when it gained independence from British rule, feel a vote for separation would be an insult to the heroes of their country's independence movement.
The flag atop the family's home flies at half mast and will only be raised at the end of July when the transitional period after the referendum comes to an end.
Al Jazeera's Mohammed Adow reports.
Content on this website is for general information purposes only. Your comments are provided by your own free will and you take sole responsibility for any direct or indirect liability. You hereby provide us with an irrevocable, unlimited, and global license for no consideration to use, reuse, delete or publish comments, in accordance with Community Rules & Guidelines and Terms and Conditions.