Henry Michael Matheson

July 6, 2004March 31, 2021
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Henry Michael Matheson was born on July 6, 2004 in Denver, Colorado. He spent his early childhood years in Northglenn before moving to Longmont in 2016, where he became a beloved member of the community. He died on March 31, 2021 in a traffic accident.

Henry was a gifted and dedicated athlete, and was involved in multiple sports as a child and adolescent, including soccer, rugby, judo, water polo, and swimming. As a swimmer, he was a 10-time state champion in multiple events and part of an outstanding relay with Flatirons Swimming in 2016 that set a state record that still stands today. In his teenage years, he turned his focus, energy, and discipline onto the tennis court, where he quickly became one of the top players in Colorado, and played 1 Singles for Longmont High School tennis. He could often be seen working out at the Longmont Athletic Club as early as 5:00 in the morning, a practice he continued through the entirety of 2020. His work ethic, positive attitude, and pure love of the game were an inspiration to everyone he encountered.

Off the court, Henry was a smart and talented student who preferred to use his abilities outside of the classroom. He was homeschooled like the rest of his four older siblings, and in addition to his traditional studies, was an excellent baker and cook, who would cook steak and pork chops for lunch and bake sugar cookies and cinnamon rolls late at night. He could juggle and ride the unicycle, sometimes simultaneously. He loved playing games of all kinds, including pool, ping-pong, basketball, poker, settlers of Catan, monopoly, and slapjack. He was devoted to the family corgi, Gwladys, who slept in his room every night. He is survived by his siblings, William, Eleanor, Charles, and Lucille, and his mother, Jennifer, and his father, Michael. The memory of his grace, charm, and kindness will be preserved forever in the hearts of his family and friends.

Mass of Christian Burial will be held at 10:00am Wednesday April 7, 2021 at St. John the Baptist Catholic Church. A private family burial will be held at Longmont Mountain View Cemetery. Memorial contributions can be made to the H.O.P.E. (Homeless Outreach Providing Encouragement) organization.


  • William Matheson, Pallbearer
  • Charles Matheson, Pallbearer
  • Kevin Priola, Pallbearer
  • Steve Williams, Pallbearer
  • Christian Trevi, Pallbearer
  • Camilo Vargas, Pallbearer



  • Mass of Christian Burial

    Wednesday, April 7, 2021



  • Burial


Henry Michael Matheson

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Kim Battig

April 7, 2021

I am so very sorry to hear about Henry. Sending prayers of comfort and peace. Kind regards, Kim Battig (Intrado)

sydney bales

April 7, 2021


From the moments I spent being in your presence, whether that being at all stars or age group zones, you shone so bright. you had a way of lighting up every room you walked into, and always making the team laugh while we sat eating the provided snacks, waiting to swim. Any team function wouldn’t have been the way it was without you.

Something at the memorial today that really stuck with me was “loving others as you do yourself”. I think that you were an amazing example of this and an example of real love. Although we weren’t very close, you touched all those that surrounded you, and so many lives you can’t even begin to name or think of. My heart goes out to all that had the privilege of knowing Henry, and especially his family. You will be so very missed.


Michelle Priola

April 6, 2021

Dearest Matheson Family,

Henry is light and salt to the world. His short life blessed so many, and will continue to have an impact that we can only imagine. I always enjoyed hearing what he was learning about and exploring...his energy and curiosity seemed boundless to me. I cherish the day he left the message on my phone calling me “Fairy Godmother” when he was a small boy.

We appreciate you tremendously - your faithful and loving example of a family dedicated to the growth of all - intellectually, spiritually, and emotionally. You truly exemplify the teachings of the Catholic Church. The proclamation that “human life is sacred and that the dignity of the human person is the foundation of a moral vision for society.” Your whole family lived this out, and it was clearly evident in Henry’s attitudes and behaviors. We can’t fathom God’s timing, but we know that His infinite love and wisdom is trustworthy. We love you.

The Priola Family
Kevin & Michelle, Turin, Bremma, Mari, and Cora

Cara and Noah Anderson

April 5, 2021

Dear Mathesons,
Noah and I are so truly sorry for loss of such a sweet caring son and brother. Henry was such an amazingly talented athlete and good person. Noah has fond memories Of swimming with Henry when he first started at flatiron swim team. Henry was one of the first people to welcome Noah to the team. We both recognize How close your family is and how much each family member cares for each other. Henry was and is such an Intercal part of your family. I know that Henry’s time here on earth was very short, but in his 16 years Henry accomplished so many things. Reading about his life and all his amazing accomplishments is astonishing. You all must be so proud of who Henry was and everything thing he was able to do expertly.
You are in our thoughts.
Cara and Noah Anderson

Brad Derthick

April 5, 2021

Henry - you were such an inspirational youngster, with an indomitable spirit. Your heart, passion, and competitive nature were beyond comprehension. Our kids first met you and your siblings in the early days with Andy Kaplan. We always looked up to the Matheson clan with admiration of your cohesion, togetherness and swimming mastery.

When you followed Eleanor and Lucy on the FAC swim team, I remember asking you “what are you swimming today?” And you’d tell me “I’m swimming the 200 fly (or something equally torturous) and I’m going to qualify for state”. And you always backed it up! Smallest kid on the blocks. Biggest heart imaginable. Amazing swimmer, but even beyond that, such a wonderful and funny personality.

We are devastated by your early departure from an already accomplished life on this Earth. We can only wish for your Mom and Dad, Will, Eleanor, Charlie and Lucy to rally the same courage and determination you always displayed, as they cope with your absence. Our sincerest sympathies to all who you’ve touched. And, Blessings to all of the Matheson family.

Owen Watkins

April 5, 2021


You were one of the 1st swimmers I met outside of my team when I started swimming. I was in awe of you. Your were like the energizer bunny in the water and you were unbeatable. At first this intimidated me, but I learned quickly that you were kind to everyone, and always showed great sportsmanship even when you were kicking everyone's butts. We got the chance to swim together the 1st time at Zones when we were 10 and then we had many more team Colorado meets together going forward. I had fun rooming with you at All Stars, hanging out at state meets and when you came up for meets at FAST it was like you were part of our team! One year you even made it on our end of season slide show (photo below). My heart goes out to your family, you touched a lot of lives and will be deeply missed.


Bosco Keown

April 5, 2021

Henry - we called you “Mighty Matheson” - you could always be relied on to rack up large hauls of points for the Flatirons Swimming team and to bring lots of people to their feet in the bleachers during finals of major meets - where you’d either win by a country mile or somehow eke out a fingernail’s length win from behind, arms windmilling cartoonishly fast and legs churning up the water like speedboat propellers. You had this natural competitiveness and will to win that would have taken you so far in life. You were taken from this world far too soon and will be sorely missed; your many accomplishments and positive impact on others in your short but happy life will live on. Rest in peace.

Deepest condolences to the Matheson family.

Love from the Keown family.

All of Northglenn Judo Club

April 5, 2021

Henry lives in our memories, and is a pulse of warmth in all our hearts.
We share in sorrow, and wish solace for the Matheson Family.

Forever, Henry.

Sarah Legh

April 5, 2021

Dearest Jennifer, Mike, Will, Elenor, Charlie and Lucy,
Henry was quite simply the best and an absolutely exquisite child.
His grit, determination and inspiration was so exciting and infectious to be around.
Our favorite memories are of Grand Junction several years ago, watching him absolutely crush all the massive boys for 8 events in a row. Every time we hear ‘Crazy Train’ it makes us smile and takes us back. Our youngest Camryn uses it as her ‘fire-up’ song for sporting events and it is always fondly refered to as the ‘Henry song’.
Please know that all our thoughts and prayers are being channeled your way to somehow find the strength to work through this tragedy.
All our love,
Sarah, Chris, Jamieson and Camryn 💗

Andrew Jones

April 4, 2021

For my 13th birthday I had a sleepover with all the kids on the swim team. A major part of this was a madden tournament. I beat him in the championship but then something happened. Henry asked for a rematch, then another, then another. Because that’s who he was, he was filled with a fiery spirit that drove him to put 100% into everything he did. In practice his arms spun around like a propeller and he was always out of breath. But through it all he still managed to crack jokes with a smile, and treat everybody with kindness. No matter what he was doing or who he was with, Henry always managed to brighten up those around him. He truest made the world a kinder, funnier, and more enthusiastic place. Rest Easy Henry, you will be missed.