He was born in San Bernardino in 1934 to Maxine Juanita Colby and James T. Montgomery. Douglas worked in the citrus industry at the Highland, CA, packing house.
He was preceded in death by his three sisters, Betty, Janice, and Geri, and brother Danny. Several nieces and nephews survive him.
Graveside services will be held at Montecito Memorial Park on Thursday, November 5th, 2026, at 1:30 pm.