Eugene (Gene) Serain Mercado
March 27, 1971 - January 24, 2026
Eugene (Gene) Serain Mercado, 54, of Clarksburg, MD passed away at his home on Saturday, January 24, 2026. He was the loving husband of Katherine Killmon Mercado for 15 years.
Born on March 27, 1971 in San Manuel, Philippines, he was the son of Eulogio Molina Mercado and Leticia Serain Mercado.
In addition to his wife, he is also survived by his children: Gabriella Rose, Grayson Luke and Caroline Violet, sisters Lillian Serain Mercado Herme (Wilson) and Cleofe Serain Mercado, brother-in-law Christopher Martin Killmon (Lori), mother-in-law Charlotte Bundick Killmon, and nieces Emily Davis Killmon, Abigail Brown Killmon, Alara Corinne Herme, Alexandria Lucia Herme, Aleia Solei Herme, and Wilan Kealani Herme.
Preceding him in death were his parents and father-in-law, Jerry Doughty Killmon.
Gene was a graduate of Mercer University, Macon Georgia with a Bachelor of Science in Biomedical Engineering and Physics. Professionally, he worked in Telecommunications Engineering and Project Management. He recently decided to pursue a lifelong desire to work in the medical field by enrolling at University of Maryland, School of Nursing.
He has been actively involved in church communities throughout his adult life and is currently a member of Monument Church in Damascus, Maryland.
Beyond the time he cherished with his family, he enjoyed both playing and watching tennis, gardening, hiking, cooking, and bringing people together to share delicious food.
A service to celebrate his life will be held at Covenant Life Church, Gaithersburg, MD, Saturday, January 31, 2pm.
In lieu of flowers, donations may be made in Gene's memory to: Christ Church of San Francisco, 6926 California Street, San Francisco 94121 or Monument Church, PO Box 545, Damascus, MD 20872 or Supporting the Mercado Family, to contribute to their kids' development and future.
Service
Saturday, January 31, 2026
2:00 PM
Covenant Life Church
7501 Muncaster Mill Rd
Gaithersburg, MD 20877
From: Joshua Talbert
First, I thank God that Eugene had a relationship with Jesus Christ! For those who do, we will see each other in Heaven with God for eternity! I met him briefly, as our 2026 UMB Nursing class is quite large, and he had a large smile on his face as he held the door open for me on our first day of class. I could tell Gene was a good dude! In hindsight, it makes even more since now seeing that he was also a child of God. My condolences to the family. Rest in the peace of God which passes all understanding! "Then he said to them, 'Go your way, eat the fat, drink the sweet, and send portions to those for whom nothing is prepared; for this day is holy to our Lord. Do not sorrow, for the joy of the LORD is your strength.'" Nehemiah 8:10 NKJV
From: Brigitte Bard
Sending heartfelt condolences to family and friends of Gene from a new friend at the University of Maryland School of Nursing.
From: Pamela Shumate
I so enjoyed meeting Gene during nursing orientation. His warmth and smile filled the room. My prayers and sympathy for his family and friends.
From: The Hilton Family
Our deepest condolences to your family.