Potawatomi District Leadership Questions? Email Us. Potawatomi District Leadership Potawatomi Key 3 Matthew Prochaska District Chair 630-302-1162 Click to Email Matthew Brian Kosan District Commissioner 630-557-9699 Click to Email Brian Sean Nadeau Senior District Executive 630-303-4025 Click to Email Sean Potawatomi District Committee Eric Essex District Finance Committee Chair 630-388-8581 Click to Email Eric Sally Wilson Vice Chair of Program 630-723-8884 Click to Email Sally Dan Olson Advancement Committee Chair 630-464-9745 Click to Email Dan David Brennan Activities Committee Chair/District Camping Chair 331-717-8195 Click to Email David Ed Hollendoner District Advancement Committee Chair 815-901-4506 Click to Email Ed Potawatomi Commissioner Team Dale Squier Assistant District Commissioner 630-917-0628 Click to Email Dale Sean Walters Assistant District Commissioner 805-758-4655 Click to Email Sean Devon Kosan Roundtable Commissioner 630-363-3866 Click to Email Devon Stephen Halm Assistant Roundtable Commissioner 630-346-8851 Click to Email Marvin Marvin Hauge Assistant Roundtable Commissioner 630-643-1484 Click to Email Marvin