William M. Dumbroski

September 25, 1943 ~ January 18, 2024 (age 80) 80 Years Old

William Dumbroski Obituary

William M. Dumbroski (Sonny), 80, of Rockville, MD passed away on Thursday, January 18, 2024.

He was the beloved husband of Brenda J. Dumbroski; loving father of Veronica Dumbroski (Ronni) and John D. Dumbroski (Dave). He was the son of the late William and Louise Dumbroski and brother to siblings Terry McKinney and Helen Permenter and the late Margaret Hahn and Arlene Marcinko.  He is also survived by his mother in-law Ruth Carter, brother in-law Gordon Carter, and many nieces and nephews.

Sonny was an employee with the Montgomery County Government’s Department of Facilities and Services for 25 years, and a member of the Steamfitters Local 602 Union for 54 years.

A mass at St. Mary’s Catholic Church will be held on Saturday, February 10, 2024 at 10:30 am in Our Lady’s Chapel located at 520 Veirs Mill Road, Rockville, Maryland 20852.

Donations in his honor may be made to the American Cancer Society at

To send flowers to the family or plant a tree in memory of William M. Dumbroski, please visit our floral store.

Friends and family have shared their relationship to show their support.
How do you know William M. Dumbroski?
We are sorry for your loss.
Help others honor William's memory.


Funeral Mass
February 10, 2024

10:30 AM
St. Mary's Catholic Church
520 Veirs Mill Road
Rockville, MD 20852


© 2024 Roy W. Barber Funeral Home. All Rights Reserved. Funeral Home website by CFS & TA | Terms of Use | Privacy Policy | Accessibility