thanks for the advice! The last census record I have for Peter with his family in a Census was the 1901 Canadian census which is what you've cited below. The 1906 census shows that Mary and the children are now living in Winnipeg. I have other sources that indicate she arrived in 1904 and put the kids in orphanages ... with instructions that there was to be no contact with Peter.
The Henderson directories show that Peter continued to be in Wetaskiwin until about 1907 or 1908. The 1903 Wetaskiwin times said that Peter was going to Red Lake Falls Minnesota for a few months to visit friends ... and a 1904 reference suggests he arrived back in Wetaskiwin. Mary's family was in that area and Peter/Mary were married there ... so my hunch is that they traveled there as a family ... Mary stayed in Winnipeg with the kids ... and Peter returned to Wetaskiwin.
The 1907 Calgary newspaper reference points to Peter Patenaude purchasing the Cecil Hotel in Hardisty along with Camille Miquelon. The only reference after that is the legal notice in 1910.
Property records from Wetaskiwin show Peter's properties being sold off between 1905 and 1909. He owned a livery stable ... and owned/raced horses and horse-drawn carts in various fairs.
The 1911 Census shows Mary with the kids in Winnipeg ... and she's listed there as Widowed. She then remarried in 1912 in Winnipeg and is listed with the kids and her new husband in the 1916 census.
I did get the Alberta vital statistics to search records for Peter's death in the 1904 to 1906 window ... they found nothing. I may now get them to search the 1907 to 1910 window as you suggested.
So the last known mention of Peter is the joint-purchase of the Cecil hotel in Hardisty ... in 1907. So I'm going on the theory that he died sometime between 1907 and 1912 ...