Rex Dennis D'Costa, 89, of Poolesville, Maryland, died peacefully on September 26, 2026, surrounded by his family.
Rex was born on April 8, 1937, in south India, to Raymond Vincent D'Costa and Blossom Patricia (White) D'Costa. He grew up in Madras (now Chennai), where he went to St. Bede's Anglo Indian Higher Secondary School. In 1972 he came to the United States to build a new life, a brave step that shaped his family for generations. He kept close ties to his loved ones around the world and was known by the name his family gave him: "Rexy."
Rex served his adopted country for many years as a federal employee, working as an agent with the Internal Revenue Service. He was known for his integrity, his hard work, and his steady dedication to his job.
On October 20, 1985, he married Juanita, his partner and companion. Together they made a home filled with love, and nothing mattered more to Rex than time with his family. He loved being an uncle to his many nieces and nephews. He also enjoyed singing as a member of the choir at Our Lady of the Presentation Catholic Church. He had a lifelong love of animals and shared his home with several dogs over the years, each one a cherished member of the family. On game days he could be found cheering for the Washington Commanders, loyal through the good seasons and the hard ones.
Rex is survived by his loving wife of nearly 41 years, Juanita D'Costa; his sons, Darren D'Costa and Sean D'Costa (Christine); his grandson, Leo D'Costa; and his brother, Leonard D'Costa (Brenda). He was preceded in death by his parents, Raymond and Blossom D'Costa; his brothers, Bonaventure D'Costa and Ralph D'Costa; and his sister, Patricia D'Costa.
The family will be receiving friends from 10:00 AM - 11:00 AM on Thursday, October 1, 2026 at Our Lady of the Presentation Catholic Church in Poolesville, Maryland, where a Funeral Mass will be celebrated at 11:00 a.m. at Our Lady of the Presentation Catholic Church in Poolesville, Maryland. A private burial will follow at Gate of Heaven Cemetery in Silver Spring, Maryland.
In lieu of flowers, the family asks that donations be made in Rex's memory to the Montgomery County Humane Society (mchumane.org), a fitting tribute to his love of animals.
Rex will be deeply missed and lovingly remembered by all who knew him, here and abroad.
Visitation
Thursday, October 1, 2026
10:00 AM - 11:00 AM
Our Lady of the Presentation
17230 Tom Fox Ave
Poolesville, MD 20837
Mass
Thursday, October 1, 2026
11:00 AM
Our Lady of the Presentation
17230 Tom Fox Ave
Poolesville, MD 20837
From: The Hilton Family
Our deepest condolences to your family.
From: Marion D’Monte
Dearest Juanita, Darren, Sean (Rex’s brother, Lenny) and members of your family: It is with a heavy heart that I wrote to pay my respects and deepest condolences to each one of you at the loss of your loved one, Rex. He was a very kind and generous man, and touched the hearts of many people who knew him. May his soul rest in peace and may God bless all of you snd give you the strength and courage to bear your loss and get through each day without Rex in this life. With much love from Noel, Marion, and the rest of my family.
From: Scharmaine Robinson
Dear Auntie Nita and cousins Darren and Sean,
We are so sorry for the loss of Uncle Rex. As we think about his life, we can’t help but be moved by the journey he took. His childhood in India was not easy. Growing up without his parents there to guide, protect, and support him meant that he had to face difficult circumstances and grow up far too soon. Somehow, he kept going and made his own way, eventually building a good home and life here in the United States. We believe his greatest accomplishment, and the most beautiful part of his legacy, is the family he built.
Please know that we are thinking of you, holding you close in our hearts, and are here for you in any way we can be. Wishing you peace, comfort, and strength in the days ahead.
With love,
Amelia, Scharmaine, Aaron, & Diann.
From: Rosella Booth
Rest in Peace Rexy. Condolences to you Juanita and family, keeping you all in our prayer's. Love from Dawn and family.
From: David Roberts
Dear Nita, Darren and Sean:
We are saddened by Rex’s passing, and we extend our deepest sympathies and condolences to you all, as well as to the extended family, along with our sincere prayers for God’s comfort and peace to surround each one of you as you navigate this difficult experience. With warm love ,
David, Sabrina and Family