Guillermo Montes de Oca

Guillermo (Bill) Montes de Oca, 65, of Annandale, VA, passed away on October 31, 2025. He will be remembered for his devotion to his family, humor, and extraordinarily unique ways. He was a jack of all trades with a generous spirit and was always there for others. He passed on his most cherished holiday, Halloween, surrounded by family and in the heart and prayers of many.

He is survived by his devoted and loving wife, Jenn Montes de Oca; his children, Aisha, Alec, Gabi, Lily, and Anya; his brothers, Gus and Alex; his grandchildren, Aiden, Sage, Stella, Meredith, Johnathon, and Madison; and his great grandson, Arlo; as well as many nieces, nephews, and friends.

In lieu of flowers, donations may be made to Thoreau Middle School to support students in their extracurricular activities allowing more students to participate.

Go to the Educate Fairfax site, you can select the amount you wish to donate, select Thoreau from the drop down and then enter a note "In memory of Bill Montes de Oca".

https://educatefairfax.app.neoncrm.com/forms/school-donations