Hamilton O’Neill

Hamilton O'Neill is a boutique family law firm in Miami dedicated exclusively to high-net-worth and complex divorce matters. Founded by Kathryn DeVane Hamilton, alongside attorney William J. O'Neill, the firm represents business owners, executives, doctors, lawyers, professional athletes, and public figures throughout Miami-Dade, Palm Beach County, and South Florida. The firm's attorneys bring more than 50 years of combined courtroom experience to matters involving asset division, business valuation, prenuptial and postnuptial agreements, child custody, and international asset disputes. Kathryn DeVane Hamilton has earned recognition from Best Lawyers in America, Florida Super Lawyers, and Martindale-Hubbell, and the firm has been named among Best Law Firms by U.S. News & World Report since 2020. Hamilton O'Neill maintains a selective caseload to provide personalized, discreet representation for each client's financial and family interests. Hamilton O'Neill is located at 150 SE 2nd Ave, Suite 908, Miami, FL 33131 and can be reached by phone at 305-371-3788.