Marjorie,
In addition to what Alain has written (and we always hope that the family wasn't simply missed) I found an Allen Monkhouse in the BC City Directories for 1909 listed as a blacksmith, living on Sardis Road in Sardis. (Search 1909 - Other Regions - Chilliwack. The entry is found on page 179). I searched the 1911 Census looking for Sardis Road with no luck (yet).
This Allen Monkhouse dies at the age of 61 in Sardis (per BC Archives Death Registration) 18 Aug 1929. The LDS record of the BC Death Record shows that he was married at the time of death to a Sarah Ellen Monkhouse (she dies 26 Apr 1952 also in Sardis). I think you will find this family in the 1901 Census;
http://automatedgenealogy.com/census/Vi ... +MonkhouseI am
guessing that this may your Monkhouse family .
I hope this helps
Dan