About

Our Legal Team

Mark McGrath

Mark McGrath


McGrath Law Office, P.C. was founded by one attorney, Mark J. McGrath. I just go by Mark. Mr. McGrath was my dad. I am a small town attorney ready to help you and listen to you. I graduated from Southern Illinois University Law School in 1978. While working my way through college and law school, I became friends with several Mackinaw residents. On November 8, 1978, immediately after being sworn in as a licensed attorney, I opened an office in Mackinaw, Illinois. From 1978 until 1980, I worked part time in the office in Mackinaw and part time as the Assistant State's Attorney for the Woodford County State's Attorney's Office. I have been engaged in the full time private practice of law in Mackinaw since September of 1980. I reside in Mackinaw, with my wife, Dottie, and I am the proud father of three children, Joe, Pat, and Molly and the proud grandfather of Jack, Sadie, Evan, Ryan, Willow, Hannah, Emerson, Allyn and Leyton.

Pat McGrath


I began my path towards becoming a lawyer at Purdue University, where I studied sales and marketing. My time at Purdue provided me with a head start on becoming a good lawyer, particularly stressing the importance of excellent client service. After attending Purdue, I continued my studies at the SIU School of Law in Carbondale. Beyond the ordinary class work, I was also able to learn the law through volunteering at the SIU Legal Clinic. At the SIU Legal Clinic, I represented the needy elderly residents of Southern Illinois on a wide variety of legal problems on a pro bono basis. I graduated from SIU School of Law in May 2009 at the top of my class and was chosen by my classmates to deliver the commencement address. After completing my studies at SIU and taking the bar exam, I immediately returned to central Illinois to join the family firm. I share my Dad’s mission to provide clients with a legal advocate who can translate the law into plain English. I live in Mackinaw with my wife, Kelly, and my four children - Sadie, Evan, Willow and Hannah. 

Pat McGrath
Mark Rossi

Mark Rossi


After graduating with a business degree from Illinois Wesleyan University, I received my law degree from DePaul University College of Law. Following graduation, I worked as a tax consultant with a large Chicago public accounting firm. In 1984, I partnered with attorney (now Justice) John Turner where I practiced estate planning, municipal, small business, real estate and health care law at our offices in Hopedale, Pekin and Lincoln. I had the pleasure of working with Mark McGrath over the years on various legal matters before leaving private practice in 2000 to become the Chief Operating Officer at Hopedale Medical Complex. Since leaving HMC in 2019, my wife, Marla and I have lived in south Florida, Colorado and now Morton where we enjoy entertaining our five grandchildren when they visit from Chicago and Colorado. I am honored to be practicing law alongside the talented McGrath legal team here in Morton.

Brooke J. Melvin


I graduated Illinois State University in 2021 with a bachelor’s degree in history and a minor in Women’s and Gender Studies. After graduation, I attended law school at Southern Illinois University School of Law in Carbondale, Illinois. While at SIU, I enjoyed collaborating with my peers, serving as a teacher's assistant in Constitutional Law, researching and creating resources for domestic violence survivors, and interning with Land of Lincoln Legal Aid. My time with Land of Lincoln prepared me in my legal career by showing me client-centered advocacy, and I was honored to serve the low-income and senior communities of Southern Illinois. In May 2024, I graduated from SIU School of Law with honors, and, in November 2024, I was sworn in as a licensed attorney. Now, I am proud to begin my legal career with the McGrath Law team. I wish to use my education and training to aid people and their loved ones with their legal issues and provide counsel in their times of need. Originally from Streator, Illinois, I now live in Morton with my fiancé Jeffrey, and I love to read and spend time with my family in my free time.

Brooke J. Melvin
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