Theres a DuBois in Wyoming too, pronounced “Doo Boys”.
The inhabitants of the town had the name forced on them, so they retaliated by refusing to pronounce the name as it was supposed to be
The original residents of Dubois, Wyoming wanted to name the town Tibo, after the Shoshone-language word for “stranger” or “white man,” which was the Natives’ affectionate name for their Episcopal priest, Father John Roberts. However, the postal service found the name unacceptable, so it endowed the town with the name Dubois after Fred Dubois, an Idaho senator at the time.[6] In protest, the citizens of Dubois rejected the French pronunciation, instead opting for Du , with u as in “Sue”; bois , with oi as in “voice”. The accent is on the first syllable