John J. Maerz, Sr.

April 18, 1930June 16, 2021
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On June 16, 2021, John J. Maerz, Sr., age 91, of Fallston, Maryland passed away. He was the beloved husband of the late Mary Jo Maerz (nee Gummer) of 66 years; devoted father of the late John J. Maerz, Jr. and his wife Wendy, Barbara Anne Maerz, Robert F. Maerz and his wife Jeanne, and the late Michael G. Maerz and his surviving wife Cheryl; loving grandfather of Kelly A. Pattison and her husband Chris, John J. Maerz, III and his wife Mandy, Michael J. Maerz and Matthew J. Maerz; and dear great grandfather of Brady and Brycen Maerz. Also survived by many nieces and nephews.

John was born in Baltimore and grew up in the Belair/Edison area in northeast Baltimore where he was raised in a large extended family with his father and brother and many great aunts and uncles to care for him. He attended grade school at The Shrine of the Little Flower and upon graduation he was a student at St. Charles Seminary in Catonsville for a year before transferring and graduating from Loyola High School in 1948. After High School, John held several positions with Crown Cork & Seal, Intercoastal Corporation, and other local companies.

In 1952, he married Mary Jo Gummer. As they began to start a family, life got busy. John began classes at Johns Hopkins University, receiving his Bachelor of Science in Chemistry after 12 years of night school with a young family of four children all under the age of 12. John was a member of the Air National Guard Reserves during the Korean War from 1953-1956. The family lived in Hamilton for many years where they had many friends and neighbors that remained close throughout their lives.

In 1968, the family moved to Fallston, Harford County (in that time it was referred to as “the country”). For many years after the move to “the country”, John worked as a senior chemist at Gibson Homens (Rosedale) where he had to commute into Baltimore every day but felt it was a small price to pay as he loved living in Harford County. John was active at St. Mark Church and spent many years with the Boy Scouts (Fallston Troop 397) where he served as treasurer, awards council member, and coordinated many troop activities, Jamborees and Award Ceremonies. His most proud memories were supporting and seeing two of his sons achieve their Eagle Scout Rank Award.

In his later years, he worked as an Industry Consultant, providing advisory services for many corporations and companies that he worked alongside over his career and was recognized as an expert in his field. As a retired senior, John worked at Fallston Pharmacy delivering medications and other pharmaceutical products throughout Harford and Baltimore Counties as well as Baltimore City. John was the Patriarch of the family. He was a loving and devoted husband; married to Mary Jo for 66 years (until her death in 2018) and raised 4 children. He was a father figure to many cousins and children’s friends spending many holidays, birthdays and summer fun eating crabs and shrimp on the back deck. John was also active in his grandchildren’s and great grandchildren’s activities (little league baseball games, high school sports, science fairs, and other school activities). John was a very generous and conscientious man, contributed to numerous organizations both religious and secular, always looking to support their activities and advance their efforts.

John loved his Baltimore sports teams: a devoted Orioles fan (even in the years that they did not do so well); a true die-hard Colts fan until they left Baltimore but extended that passion to the Ravens and was always looking forward to the next Super Bowl. He enjoyed watching horse racing (especially the Triple Crown races) and was known to place a bet now and again. John was an avid gardener and known to have a green thumb. He also was an active investor and enjoyed following the business events of the day.

John loved telling stories of his youth and life experiences and he was best known for his infectious good-spirt and pleasant smile. He was a man of faith and believed in “Family First”. Proud of his children’s accomplishments and always there to support them, listen, and provide advice if needed. He loved his beer, crabs, and steamed shrimp. He loved his home and living in Harford County.

Relatives and friends may gather at Schimunek Funeral Home of Bel Air, Inc. 610 W. MacPhail Rd. Bel Air, MD 21014, on Tuesday July 27, 2021, from 2-4 and 6-9 PM. Funeral Mass will be celebrated at St. Mark Catholic Church 2407 Laurel Brook Rd. Fallston, MD 21047 Wednesday July 28, 2021, at 10:30 AM. Interment Bel Air Memorial Gardens. Online tributes may be left at In lieu of flowers, donations can be sent to St. Jude Children’s Research Hospital at and St. Mark Church in Fallston, Maryland at


28 July

Funeral Mass

10:30 am - 11:30 am

St. Mark Catholic Church

2407 Laurel Brook Rd.
Fallston, MD 21047

28 July

Committal Service

12:00 pm - 12:15 pm

Bel Air Memorial Gardens

809 Rock Spring Rd.
Bel Air, MD 21014


  • Visitation

    Tuesday, July 27, 2021

  • Visitation

    Tuesday, July 27, 2021


John J. Maerz, Sr.

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Christopher Pattison

July 27, 2021

Grandad, you will be greatly missed! The world was a better place with you in it.
I am going to miss our visits and fun stories.
Heaven gained a great one! May you rest in peace with the Lord where you belong!
All my love,
Chris Pattison

Margaret Kanaras

July 26, 2021

Mr. John lived an incredible life and I was blessed to be a part of it. I met him as a caregiver for Mary Jo. They were a delightful couple. Sitting around the kitchen table, they would tell stories of their life in Hamilton and eventually Fallston. Sometimes they would go back and forth of whom remembered the story correctly, but it was all in good fun. Mary Jo would love to laugh and Mr. John would sit quietly, with a smile on his face. Mary was a beautiful soul, after she passed, I stayed on with Mr. John.
He was such a sweet man. He made me feel like I was family. We’d start our day off with breakfast ( loved his oatmeal), usually chatted with Barb on the phone , and then maybe get in his daily exercises (which I would join in) , sometimes after exercising we would sneak chocolate candy or popcorn. Such fun times!
I would take Mr. John to many of his appointments, he enjoyed going to his barber, getting a haircut and catching up with the latest news.
Mr. John loved following the stock market on tv, chatting about sports, the former president, our catholic faith, really anything. He was knowledgeable in so many areas.
Later as the day went on, he would have a visit from his granddaughter, Mandy who would drop off dinners to him. (Sometimes with his great grandsons). He enjoyed seeing all of them.
Mr. John was a true family man. He was so proud of his children Jack, Bob, Barbara and Michael, and the stories he shared about them reflected that. He was happy when Bob would visit and help him out when needed. He enjoyed when Barb would stay during her summer and Christmas breaks. He loved and was proud of his entire family.
Mr. John was a kind, giving , warm hearted gentleman. He had a smile that would light up a room and a sparkle in his eyes. He will be missed by all who loved him.
I know he’s in heaven now, maybe in a rocker, next to Mary Jo, enjoying a cold beer and getting ready to take a nap.
Love and God Bless
Margaret ❤️

Carrie Wright

July 24, 2021

Mr. John was such an amazing human being. His smile and kindness was infectious. To know him, was to love him. He will always be remembered as a gentleman, and more of what this world needs. A good example of what a man looks like. I know Ms. Mary is holding his hand as they walk hand in hand in Heaven. Rest in peace, Mr. John. We will always love and miss you❤💔🙏- Carrie

Irene Fellin

July 21, 2021

Dearest John. It has been so difficult thinking that you are gone. What great next door neighbors. Funny times, sad times but always the love of friends. We miss you both so much. I am sure God has great plans for you as he had for Mary. Love you both always❤️

Peggy Harrop

July 21, 2021

We will miss visiting you and hearing of the stories of your childhood with my mom Jean and my Aunt Rita. It was always a fun time at Tillman’s Island for family vacations. Family reunions in PA were fun too. God bless you Uncle John. Hugs and kisses. May you Rest In Peace.😘💕♥️🥲

Patty Slater Rodriguez

July 21, 2021

So many memories growing up on Theodore Avenue, and driving out to the country for parties and celebrations. RIP Mr John you will be missed by many who will remember you fondly.
Love Patty

Scott, Margie, Luke, Grace and Maeve Beyer

June 28, 2021

We are firm believers that we cross paths with people in life for a reason. We are so fortunate to have crossed paths with Mr. John and Ms. Mary Jo. When we think of Mr. John and Ms. Mary Jo, we can't help but smile. We enjoyed conversations with both of them and they were always so sweet to our children. Our children were always so excited to go trick or treating at Mr. John and Ms. Mary Jo's house. They were our favorite neighbors! We admired their faith in the Lord and their love for their family.
We will continue to keep The Maerz Family in our thoughts and prayers. Know that you have two beautiful angels looking down on you!
Love-Margie, Scott, Luke, Grace and Maeve

Craig and Monica Zimmerman

June 23, 2021

Our deepest sympathy for the loss of your beloved father. He was a very rare truly nice gentleman. We will miss him in the Court!

Bob Maerz

June 19, 2021

I love you Dad and miss you already.
Rest in Peace

Linda Hayward

June 18, 2021

Mr. John, it was a privilege to be one of your caregivers and most importantly your friend. We met each other when times were hard for you. You trusted me to care for you and help you stay in your home. You shared your family with me and always made me feel welcome. I’m so happy that I was able to bring some brightness to you when you were feeling down. You taught me that friendship has no age limits despite our 50 year age difference. The the times we spent together eating P.F Chang’s and ice cream, laughing, sneaking that extra Budweiser, and telling stories around the kitchen table will never be forgotten. Can’t forget all the sleepovers and laughing about what the neighbors might think! We had lots of great times together. I’m so glad I was able to be by your side.
It’s only been a few days and I miss you so much. Love you 😘
Farewell my friend, until we meet again!