Mark A.Barnum, 68, passed peacefully at home on November 13, 2025. His family was his pride and joy. He is survived by his wife Sally, to whom he was married for 40 years; son, Eric (Ainslee), and granddaughter Rori; daughter, Michelle (James) and their anticipated baby boy. Mark is also survived by his sister, Kimberly (Steve) Bell of Bartlesville, OK and his brother Jeff (Jeanette) Barnum of Fairport, NY. He was predeceased by his parents, Peter and Joan (Mindnich) Barnum. Mark was a lifelong resident of Fairport, NY and had recently retired from a rewarding 40 year career with Hewlett Packard which he enjoyed "24/7". Besides family time spent at Keuka Lake, he valued the friendship of the Great Northern Fishing Club, The Hackers golf league, and Tuesday night cards at The Fort. If you had the privilege to know Mark, you experienced his kindness and compassion. Please pay it forward, and in a world where you can be anything, Be Kind.
A funeral mass will be scheduled, and according to Mark's wishes, there will be no other services. The family requests in lieu of flowers that you make a contribution to cancer research or a charity of your choice.
To plant trees in memory, please visit the Sympathy Store.
Please consider a donation as requested by the family.

What kind of arrangement is appropriate, where should you send it, and when should you send an alternative?
Read more
We'll help you find the right words to comfort your family member or loved one during this difficult time.
Read more
Information and advice to help you cope with the death of someone important to you.
Read moreIf you’re in charge of handling the affairs for a recently deceased loved one, this guide offers a helpful checklist.
Read more
Legacy's Linnea Crowther discusses how families talk about causes of death in the obituaries they write.
Read more
You may find these well-written obituary examples helpful as you write about your own family.
Read more
These free blank templates make writing an obituary faster and easier.
Read more
Some basic help and starters when you have to write a tribute to someone you love.
Read more