Familysearch.org has British Columbia records. I found a Gordon Edwin Boyce, but he was single, 24 when he died. You may want to look at this site further. I looked on the cemeteryfinding aid for B.C. and could not find that name.

May I suggest giving more information on your grandfather, where he was born, birth date....or approx. date, parents names if you know them. etc. This helps with the search, and helps other identify if they have found the right person,etc.

Have you talked to other family members from your Grandfather's family? Maybe they remember getting a letter from him from a certain place, or they might know of another family member that might know something.

Best wishes in your research.