About Marcus Bradley
Marcus Bradley is an author, speaker, coach, entrepreneur, philanthropist, and community advocate from Elgin, Illinois — and a devoted father, son, brother, and family man. A graduate of Elgin High School (Class of 2003), he was raised in a foster family from the age of two and draws on that lived experience to encourage greater understanding between caregivers and children.
He is also a business owner, a teacher and mentor, and a proud advocate and activist for Black and Latino communities — building ventures, coaching young people, and standing up for the families he serves.
His book, Changing the Dynamics Between You and Your Foster Child, invites readers to consider how empathy, communication, and connection can shape family relationships. Through his writing, speaking, and coaching, Marcus shares lessons about resilience, discipline, and personal growth.
What Marcus Does
Author, speaker, coach, entrepreneur, philanthropist, advocate — and a devoted family man.
Author
Published author of Changing the Dynamics Between You and Your Foster Child.
Speaker
Sharing lessons on resilience, discipline, and connection with audiences and organizations.
Coach, Mentor & Teacher
Boxing coach and mentor teaching discipline, confidence, and resilience through Diamond Duke Fitness.
Entrepreneur & Business Owner
Founder of Diamond Duke Corporation and its family of ventures.
Philanthropist, Advocate & Activist
An advocate and activist for Black and Latino communities and for children and families in foster care.
Family Man
A devoted father of five, a son, and a brother — family is at the heart of everything he does.
Community Involvement
Marcus is active in his Elgin, Illinois community.
City of Elgin Community Task Force on Policing
Marcus Bradley is listed among the members of the City of Elgin Community Task Force on Policing, a community group that reviewed the Elgin Police Department’s policies and practices and developed recommendations to strengthen the department’s relationship with the community.
View the official City of Elgin task force roster →Documented civic service per City of Elgin records. This listing does not imply a current appointment or an endorsement by the City of Elgin.
In Loving Memory
The family whose love shaped Marcus’s life and work.
Mariah Bradley & Jeffrey “Duke” Bradley
Marcus honors his foster mother, Mariah Bradley, who opened her home and her heart, and his foster brother, Jeffrey “Duke” Bradley (1970–2017). Their love and belief in him shaped the man, father, and mentor he is today.
Marcus carries Jeffrey’s memory forward in his life’s work: Diamond Duke Corporation and Diamond Duke Fitness are named in his honor — a lasting tribute to a brother who is deeply missed.
Related Brands & Ventures
Diamond Duke Corporation
Marcus's umbrella business entity encompassing his entrepreneurial ventures.
Diamond Duke Fitness
Boxing coaching and fitness programs focused on discipline and personal growth.
Sunglow Innovations
Innovation-focused projects and creative ventures.
Tuyakeen Fight Wear
Athletic and fight wear brand for boxers and martial artists.
THE B.L.U.E APP
AI-powered local services marketplace — moving, cleaning, handyman, deliveries, and more. Available on Google Play and on the web.
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