Atty. Mark John McLennon

Atty. Mark John McLennon

Mark John McLennon is a lawyer practicing estate planning, family wealth transfer, probate and 2 other areas of law. Mark received a B.S. degree from Marquette University in 1982, and has been licensed for 40 years.

Milwaukee Milwaukee 40 yrs experience 40 year
Call (507) 606-0364 Book Appointment

Profile Summary

About Mark John McLennon at a glance

Mark John McLennon is a probate, family law, and estate planning attorney based in Milwaukee, Wisconsin. They have 40+ years of legal experience, licensed to practice since 1986. Admitted to practice in Illinois (1986) and Wisconsin (1993). Educated at Northern Illinois University (J.D., 1986) and Marquette University (B.S., 1982). Serands clients in Milwaukee, WI and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mark John McLennon is a lawyer practicing estate planning, family wealth transfer, probate and 2 other areas of law
  • Mark received a B.S. degree from Marquette University in 1982, and has been licensed for 40 years
  • Mark practices in Milwaukee, WI

Practice Areas Explained

Mark John McLennon's Areas of Practice

Each practice area below reflects the types of cases Mark John McLennon handles, with a brief overview of what that area of law covers.

Probate

Mark John McLennon is one of 128,014 probate attorneys indexed nationally. Browse probate attorneys in Wisconsin →

Family Law

Family law attorneys handle divorce, child custody, child support, adoption, prenups, and protective orders. Find verified family lawyers near you.

Mark John McLennon is one of 187,066 family law attorneys indexed nationally. Browse family law attorneys in Wisconsin →

Estate Planning & Probate

An estate planning attorney prepares wills, trusts, powers of attorney, and healthcare directives to protect your family and pass on your assets.

Mark John McLennon is one of 226,537 estate planning attorneys indexed nationally. Browse estate planning attorneys in Wisconsin →

Jurisdictional Context

Why local counsel matters in Wisconsin

Practicing law in Wisconsin. Legal matters in Wisconsin are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Milwaukee are typically filed in the local municipal court or the appropriate Wisconsin state district court, depending on subject matter and amount in controversy. An attorney licensed in Wisconsin brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Wisconsin courts without local counsel or pro hac vice admission.

Looking for additional Wisconsin attorneys? Browse all attorneys in Milwaukee or all attorneys in Wisconsin.

Frequently Asked

Common questions about Mark John McLennon

Where is Mark John McLennon's law office located?
Mark John McLennon's law practice is located in Milwaukee, Wisconsin. You can contact the office directly through this profile page.
What practice areas does Mark John McLennon handle?
Mark John McLennon focuses on probate, family law, estate planning. Each practice area listed reflects experience handling cases of that type in Wisconsin.
How long has Mark John McLennon practiced law?
Mark John McLennon has 40+ years of legal experience and has been licensed since 1986.
Where did Mark John McLennon go to law school?
Mark John McLennon earned their education at (J.D., 1986); (B.S., 1982).
How can I contact Mark John McLennon for a consultation?
You can contact Mark John McLennon directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.

Education

J.D.
Northern Illinois University
- 1986
B.S.
Marquette University
- 1982

Bar Admissions

Illinois
Admitted: 1986
Wisconsin
Admitted: 1993

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