Hi, Not researching the CAWSTON surname.
Have You searched the Provincial Archive of BC Vital Events Index - Marriage 1859-1933 Birth 1872-1903 Death 1872-1988

Finds 2 CAWSTON Births: 5 male CAWSTON marriages -3 CAWSTON female Marriages. 18 CAWSTON Deaths including 2 Richard Lowe CAWSTON - 1 in CAWSTON BC - 1 in Penticton BC,

Filmed registrations can be viewed at no cost at the Provincial Archive in Victoria. Some Public or University Libraries in the Province.
Information found can be transcribed or photo copied for .50 cents or less depending on location of copy machine.

Volunteers At Random Acts of Genealogical Kindness - British Columbia. Any who offer Lookup of Public Record can transcribe or copy.
Some offer search for Obituary. Others offer Cemetery Photo
Cheers,Stella