Trusted Legal Counsel.

Since 1972.

Law Firm Helping Individuals, Families and Businesses Across Southwestern Ontario Move Forward with Confidence

Life is Filled with Important Decisions.

Whether you’re buying a home, protecting your family, growing a business, or facing a legal challenge, our lawyers provide practical advice and experienced representation to help you move forward with confidence.

Serving clients throughout Southwestern Ontario from our offices in London, Stratford, and St. Marys.

At McDonald, Simon, Stewart and Reidy LLP, we take the time to listen, understand your goals, and deliver legal advice tailored to your unique situation.
Hanging McDonald Simon sign with a stag emblem

A tradition of excellence

A Law Firm Built on Relationships, Experience and Trust

Legal matters are about more than the law—they’re about protecting your family, your business, your future, and the decisions that matter most.

At McDonald, Simon, Stewart and Reidy LLP, we provide practical legal advice and experienced representation to individuals, families, businesses, agricultural operations, municipalities, and organizations throughout Southwestern Ontario.

From our offices in London, Stratford, and St. Marys, our lawyers deliver personalized legal solutions across Business Law, Real Estate Law, Wills & Estates, Family Law, Civil Litigation, Criminal Law, and Appeals.

Whatever legal matter brings you here, our commitment is simple: listen carefully, explain your options clearly, and help you move forward with confidence.

Why Choose McDonald, Simon, Stewart and Reidy LLP

Trusted Relationships. Practical Advice.
A Commitment to Your Success.

Choosing a law firm is about more than legal knowledge. It is about working with trusted advisors who understand your circumstances, communicate clearly, and provide practical guidance when important decisions need to be made.

For more than 50 years, individuals, families, businesses, agricultural operations, and organizations throughout Southwestern Ontario have trusted our firm for experienced legal representation and lasting relationships built on integrity, professionalism, and personalized service.

We Listen Before We Advise

Every legal matter begins with understanding your goals.

We take the time to listen, explain your options clearly, and provide practical legal advice tailored to your circumstances, so you can make informed decisions with confidence.

Practical Advice You Can Understand

Legal advice should be clear, practical, and easy to understand.

We provide straightforward legal advice, practical solutions, and clear guidance to help you move forward with confidence.

Building Relationships That Last

Many clients come to us with one legal matter and stay with us for years.

As life changes, they continue to rely on our team for practical legal advice and trusted guidance every step of the way.

Deep Roots in Southwestern Ontario

With offices in London, Stratford, and St. Marys, we are proud to serve communities throughout Southwestern Ontario.

Our local roots allow us to provide practical legal advice that reflects both the law and the realities our clients face every day.

Comprehensive Advice Under One Roof

Many legal matters are connected.

As a full-service law firm, we provide coordinated legal advice across multiple areas of law, giving clients the convenience and confidence of working with one trusted legal team.

Deep Roots in Southwestern Ontario

For more than 50 years, we’ve earned the trust of clients throughout Southwestern Ontario.

We do so by providing practical legal advice, clear communication, and a commitment to protecting our clients’ interests.

Ready To Take The Next Step?

Practice Areas

Legal Guidance for Every Stage of Life and Business

Life’s legal needs often evolve over time. Whether you are buying a home, growing a business, planning your estate, or resolving a legal dispute, our lawyers provide practical advice across Business Law, Real Estate Law, Wills & Estates, Family Law, Civil Litigation, Criminal Law, and Appeals.

Whatever chapter comes next, McDonald, Simon, Stewart and Reidy LLP is here to help you move forward with confidence.

Person in business attire discussing a matter across a desk

Business Law

Building a Business Takes Vision. Protecting It Takes Trusted Legal Advice.

Strong businesses are built on informed decisions. Our lawyers provide practical legal advice to entrepreneurs, corporations, agricultural businesses, and family-owned enterprises through every stage of growth, from incorporation to succession planning.

Services Include

  • Incorporations
  • Shareholder & Partnership Agreements
  • Business Purchases & Sales
  • Commercial Contracts
  • Corporate Governance
  • Succession Planning
Older adults and a child sharing time together

Wills & Estates

Planning Today
Helps Protect Tomorrow.

Protect your family, your wishes, and your future with thoughtful estate planning. Our lawyers provide practical guidance for wills, powers of attorney, estate administration, and long-term planning with clarity and compassion.

Services Include

  • Wills
  • Powers of Attorney
  • Estate Planning
  • Probate
  • Estate Administration
  • Trust Planning

Two people shaking hands in an office

Real Estate Law

Buying Property Should Be Exciting. The Legal Process Shouldn’t Be Stressful.

Whether you’re buying, selling, refinancing, or transferring property, our lawyers provide practical legal guidance to help protect your investment and ensure your transaction proceeds smoothly from start to finish.

Services Include

  • Residential Purchases & Sales
  • Commercial Real Estate
  • Mortgage Refinancing
  • Title Transfers
  • Private Mortgages
  • Estate Property Transfers

Family walking together along a sunlit path

FAMILY LAW

Helping Families Navigate Life’s Most Personal Decisions.

Family law matters require practical advice, clear communication, and compassionate guidance. Our lawyers help clients navigate separation, parenting arrangements, support, and property matters while working toward solutions that protect what matters most.

Services Include

  • Separation & Divorce
  • Parenting Arrangements
  • Child & Spousal Support
  • Property Division
  • Domestic Contracts
  • Court Representation
Two people discussing a matter across an office desk

CIVIL LITIGATION

Resolving Disputes with Practical, Strategic Advice.

Legal disputes require practical strategies and experienced representation. Our lawyers help individuals and businesses resolve contract, property, commercial, and construction disputes through negotiation, mediation, or litigation when necessary.

Services Include

  • Contract Disputes
  • Commercial Litigation
  • Property Disputes
  • Construction Matters
  • Debt Recovery
  • Alternative Dispute Resolution

 

Two people discussing documents in an office

APPEALS

Experienced Advocacy Beyond the Initial Decision.

Appeals require careful legal analysis and strategic advocacy. Our lawyers represent clients in civil, criminal, and family appeals, providing clear advice and experienced representation throughout the appellate process.

Services Include

  • Civil Appeals
  • Criminal Appeals
  • Appellate Advocacy
  • Legal Research
  • Written Submissions
  • Court Representation

 

 

Balance scales beside a window

CRIMINAL LAW

Protecting Your Rights When It Matters Most.

When your rights and future are at stake, experienced legal representation matters. Our lawyers provide practical advice and strong advocacy through every stage of the criminal justice process, helping you understand your options with confidence.

Services Include

  • Criminal Defence
  • Bail Hearings
  • Court Representation
  • Sentencing Hearings
  • Charter Issues
  • Legal Advice

WHY EXPERIENCE MATTERS

A Track Record You Can Trust

50 +

YEARS OF EXPERIENCE

1972

ESTABLISHED YEARS

THOUSANDS

OF CLIENTS REPRESENTED

ACROSS ONTARIO

PROUDLY SERVING SOUTHWESTERN ONTARIO

The People Behind the Advice

Meet the Lawyers of McDonald, Simon, Stewart and Reidy LLP

Our lawyers bring diverse experience across seven areas of law while sharing the same commitment to professionalism, integrity, and responsive communication.

By working collaboratively, our team provides coordinated legal guidance tailored to each client’s circumstances, objectives, and future needs.

Mark E. Simon, Managing Partner

Mark E.
Simon

Managing Partner

Shawn Stewart, Partner

Shawn
Stewart

Partner

Luke Reidy, Partner

Luke
Reidy

Partner

Hugh D. McDonald, Founding Partner Emeritus (retired)

Hugh D.
McDonald

Partner (Retired)

William Doran, Senior Counsel

William
Doran

Senior Counsel

Antonia Evans, Associate Lawyer

Antonia
Evans

Associate Lawyer

Jordan Rosindale, Student-at-Law

Jordan
Rosindale

Student-at-Law​

Austin VanderBurgt, Articling Student

Austin
VanderBurgt

​Articling Student

What Our Clients Say

Real Experiences, Real Impact

"Transparent pricing and lawyers who actually care. The St. Marys team is incredible. Grace answered all of my phone calls and was always a delight!"

Roger Bois

"My mother and I had a great experience dealing with the McDonald Simon Law firm. Their goal was to not waste our money or time, and to get the job done as soon as possible. They accomplished this and put us at ease at every turn. We highly recommend them!"

Malinda Galloway

"Shawn and Abbey are great! I very much appreciated everything they did for my family."

Sara Simmonsa

"Mark Simon has been a pleasure to work with, very professional and knowledgeable. To top it off he’s been very reasonable with billing compared to past experiences with other firms."

Tyler Langfield
Woman smiling during a conversation at an office table

KNOWLEDGE CENTRE

Insights & Resources

COMMON QUESTIONS

Helpful Answers To Your Most Important Questions

McDonald, Simon, Stewart and Reidy LLP is a full-service law firm serving individuals, families, businesses, agricultural operations, municipalities, and organizations throughout Southwestern Ontario. Our lawyers provide legal services in Business Law, Real Estate Law, Wills & Estates, Family Law, Civil Litigation, Criminal Law, and Appeals. Whether you need assistance with a single legal matter or ongoing legal advice, our team is committed to providing practical guidance tailored to your unique circumstances.

Learn More About Our Practice Areas →

You don’t need to know exactly which lawyer to contact before reaching out.

When you contact McDonald, Simon, Stewart and Reidy LLP, we take the time to understand your situation before connecting you with the lawyer whose experience best matches your legal needs. Our collaborative approach ensures you receive knowledgeable advice from the right legal professional, whether your matter involves real estate, business law, estate planning, family law, civil litigation, criminal law, or an appeal.

The best time to seek legal advice is before important decisions are made.

Whether you are buying or selling property, starting a business, preparing a will, navigating a family matter, or responding to a legal dispute, obtaining legal advice early can help identify risks, prevent costly mistakes, and provide peace of mind throughout the process.

When you contact McDonald, Simon, Stewart and Reidy LLP, we take the time to understand your situation before connecting you with the lawyer whose experience best matches your legal needs. Our collaborative approach ensures you receive knowledgeable advice from the right legal professional, whether your matter involves real estate, business law, estate planning, family law, civil litigation, criminal law, or an appeal.

Yes. In Ontario, a lawyer plays an essential role in every real estate transaction.

Your lawyer reviews title, prepares legal documentation, coordinates with lenders and real estate professionals, registers the transfer of ownership, and helps ensure your interests are protected throughout the closing process. Experienced legal guidance can help make one of life’s largest financial decisions proceed smoothly and with confidence.

Absolutely.

Our firm proudly assists individuals, families, entrepreneurs, corporations, agricultural operations, municipalities, and community organizations throughout Southwestern Ontario. From purchasing a home and preparing an estate plan to incorporating a business, resolving a dispute, or defending legal rights, our lawyers provide practical legal advice across a broad range of practice areas.

For more than 50 years, our firm has built lasting relationships by providing practical legal advice, responsive communication, and personalized client service.

We believe exceptional legal representation begins with listening. Every client has unique goals and circumstances, and we take the time to understand what matters most before recommending solutions. Our commitment to integrity, professionalism, and long-term relationships has earned the trust of generations of clients throughout Southwestern Ontario.

No.

While our firm has proudly served Stratford and Perth County for more than fifty years, we also have offices in London and St. Marys and represent clients throughout Southwestern Ontario. Whether you are an individual, family, business owner, agricultural operation, municipality, or organization, our lawyers are committed to providing accessible legal services close to home.

Getting started is simple.

Contact one of our offices in London, Stratford, or St. Marys to schedule an initial consultation. During your first conversation, we’ll learn more about your legal matter, answer your questions, explain the next steps, and connect you with the lawyer best suited to assist you.

Book a Consultation →

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