The following site includes these Death entries:
B.C. Vital Events Index
www.bcarchives.gov.bc.ca/textual/governmt/vstats/v_events.htm

1. Vital Event Death Registration

Name: Arthur Beecroft

Event Date: 1982 7 29 (Yr/Mo/Day)

Age: 72 (ergo – Date of Birth 1910)

Gender: male

Event Place: Unknown

Reg. Number: 1982-09-012817

B.C. Archives Microfilm Number: B13622

GSU Microfilm Number: 2051743

2. Vital Event Death Registration

Name: William Arthur Beecroft

Event Date: 1984 4 9 (Yr/Mo/Day)

Age: 72 (ergo – Date of Birth 1912)

Gender: male

Event Place: Penticton

Reg. Number: 1984-09-006684

B.C. Archives Microfilm Number: B13638

GSU Microfilm Number: 2073155

Hope this helps. I was unable to locate any record of marriage between Arthur and Irene.