John Leo Duffy
1961 - 2020
JOHN LEO DUFFY John Leo Duffy, 59, of Las Vegas, Nevada died on December 10, 2020 at Saint Rose Dominican Hospital in Las Vegas. He was laid to rest on December 17, 2020 at Sacred Heart of Mary Catholic Church Cemetery in Boulder, Colorado. John was well known for his generosity of spirit and big heart, as well as a legion of friends and family spanning coast to coast. He never needed social media to reconnect with people because he never fell out of touch with them to begin with. Friendship, faith, and family formed the bedrock of his life. John was born in 1961 in New Jersey to Patrick and Mary Isabel Duffy. He moved with his family to Boulder, Colorado in 1976 where he became an avid skier. He graduated from Fairview High School class of 1979 where he lettered in football. He attended Regis University in Denver, class of 1985, and flourished as a dedicated scholar and member of student government. Next, he moved to South Bend, Indiana and attended the University of Notre Dame Law School class of 1988. After spending the next few years between Colorado and Nevada, passing the bar exam in both states, John settled in Las Vegas in 1995. He married Shari Kaufman in 1996 and son Liam was born in 1998. John worked as a defense attorney in Las Vegas for nearly 25 years. He is survived by his mother, Isabel, Broomfield, CO, wife, Shari, Las Vegas, NV, son Liam, Las Vegas, NV, brother, Patrick (Bernice) of Broomfield, CO, Daniel (Michelle) of Broomfield, CO, nephews David, Grey, and Sean and niece Shannon, and special canine friend, Stella. He is preceded in death by his father, Patrick, in 2011 and brother, Sean, in 1968. Lastly, there is a quote from A.A. Milne's Winnie the Pooh that captures John's life. "If there ever comes a day when we can't be together, keep me in your heart, I'll stay there forever." A celebration of John's life will be held at a future date. Contributions may be made in his name to Regis University's scholarship fund, 3333 Regis Blvd., Denver, CO. 80221. A public Mass of Christian Burial will be announced at a later date. M.P. Murphy & Associates Funeral Directors of Boulder, CO. is in charge of arrangements. For online messages to the family visit

To plant trees in memory, please visit our Sympathy Store.
Published by M.P. Murphy & Associates Funeral Directors on Jan. 3, 2021.
No memorial events are currently scheduled.
To offer your sympathy during this difficult time, you can now have memorial trees planted in a National Forest in memory of your loved one.
Funeral services provided by:
M.P. Murphy & Associates Funeral Directors
Add a Message
9 Entries
Miss you friend. You had a big heart!
January 14, 2021
Great guy, big smile, I have known him through the court system for many years and he always would recognize me and ask me about my family, whom he did know here in Vegas. The funny thing is he would see me from far away and always call me "Chris" to the point where I would just go with it. He will be missed very much.
James McKellar
January 14, 2021
Dear Shari, Liam, Isabel, and Stella and all of John's extended family, The Duffy family has always been heartfelt supportive and welcoming to me. Such a blessing. I remember John with his warm hugs and booming, confident, loving, assuring voice, such a warm presence indeed. I think of you all and the void that is left. I wish you love, rememberance and peace. Love to you all. Marisa B
Marisa Burt
January 12, 2021
John was friend of mine back in Boulder in the 80s. We had a pretty big group of friends and acquaintances but him and I really enjoyed each other’s company.
The last time I saw him was when he came to Chicago and stayed at my house. I remember he was headed back to Boulder one morning in a car that I was pretty sure wasn’t going to make it. We came up with a plan and sure enough he made it! Kept in touch for a while but like what happens often, we kind of lost touch.
I knew he was in Vegas and I also knew he would make something of himself. Well he most certainly did!
Rest well my friend until our paths cross again .
My deepest sympathy Mrs. Duffy
Jim ( Geno) Volini
January 4, 2021
It was such a joy to know John. Always kind, and quick with a good chuckle to lighten the mood in court. I remember the day John announced they were expecting. Such love and pride always for you Liam. So sorry Shari. You are all in my prayers.
Kristen Lynch
January 4, 2021
John was the first friend I made when I moved to Boulder. Always entertaining with his quick wit. I was proud to call him my friend. My prayers to his mom and brothers for peace in their broken hearts. God bless.
Gerry Von Hoene Smith
January 3, 2021
Gonna miss ya big John, always a gentle giant and lived bigger than life, hope our paths cross again but if not it was a awesome time we had.
Mark Flood
January 3, 2021
I was deeply saddened when I learned of John's passing while reading this morning's Sunday Las Vegas Review Journal. His wife Shari and I, both New Yorkers (but different in almost every other respect) were frequently adversaries in federal court. John and I, both East Coast Irishmen, shared laughs about how very different he and Shari's backgrounds were as well. John always displayed good humor. My sympathies got out to Shari and Liam (the selection of his name was the subject of one of those funny conversations) and John's entire family. Requiesce in pace, John.
Tom O'Connell
January 3, 2021
Dear Shari, Liam, Isabel, and Stella - Anybody who knew John thought of him as the sweetest person they've ever met. His passing leaves a giant hole in all of our hearts. He was a dear friend in high school and made every effort to stay in touch because he truly cared about all he knew. Much love to you all from my family to yours. Jennifer Mueser Bunker, Utah.
January 3, 2021