I know this is a very old query, but just in case you're still looking:
Norman Kenneth Devlin died 17 May 1941 in Creston BC, and was interred in the Pioneer cemetery on 20 May 1941. His wife was only listed as "Margaret Devlin." The death certificate was signed by his son "M. Devlin" of Vancouver. See "British Columbia Death Registrations, 1872-1986," index and images, FamilySearch (
https://familysearch.org/pal:/MM9.3.1/TH-267-11738-158699-20... : accessed 12 April 2015), 004438061 > image 2671 of 3251; Division of Vital Statistics, Victoria.
Mark Devlin, son of Norman Devlin and Margaret Allen, died 17 Jul 1960 in North Vancouver BC, and was cremated in Burnaby on 19 Jul 1960. His death certificate was signed by his son "E.S. Devlin" of North Vancouver. See "British Columbia Death Registrations, 1872-1986," index and images, FamilySearch (
https://familysearch.org/pal:/MM9.3.1/TH-267-12884-174404-21... : accessed 12 April 2015), 004437631 > image 2431 of 3047; Division of Vital Statistics, Victoria.