Martin J. Costello

John M. Hughes

Thomas R. Hughes

Katrina E. Joseph

John G. Dillon


John M. Hughes

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John M. Hughes is a partner at Hughes & Costello, and practices in the areas of wills, trusts, estate planning, family law, real estate law, and workers' compensation. John has 30 years' experience and has assisted hundreds of families and thousands of individuals with legal matters, both simple and complex. He has appeared hundreds of times in Family, Juvenile, and Probate Courts, and has been court-appointed counsel in numerous juvenile and guardianship/conservatorship proceedings. He is also a former misdemeanor prosecutor, and is a family court-certified mediator.

Bar Admissions
  • Minnesota Supreme Court and all state courts
  • U.S. District Court for the District of Minnesota

Professional Associations
  • Member, Minnesota State Bar Association
  • Member, Ramsey County Bar Association
  • Past Committee Chairman Juvenile Law, Minnesota Trial Lawyers Association
  • Past Committee Chairman, Ramsey County Juvenile Law Committee

Teaching & Speaking Engagements
  • Former Instructor, Juvenile Law, William Mitchell College of Law
  • Former Field Supervisor, Criminal Law, William Mitchell College of Law