Hi, Re marriage : Genealogical Registration of Marriage - Long Form Marriage Certificate - is difficult - Alberta does not make Vital Events - Birth,Marriage, Death - available on line as public record

Do you know what religion the family practiced?
There may be church records . Do you know aprox when the first child was born Baptised?

From the Alberta GenWeb - Local History Book site
Families submitted family history/stories to the Local History book project
Perhaps the following - connected to your researhc?
names and marriage may appear in the following books

ROSENTRETER, Ben; Looking Back; Camrose
VOLUNTEER: Shirley, smsmith1@telusplanet.net

ROSENTRETER, Ed & Hazel; Timber Trails and Pipeline Tales; Brazeau
VOLUNTEER: Shirley, smsmith1@telusplanet.net

Cheers, Stella