Hi, Have you searched the 1916 Census?
to see if Patrick HENES appears with the family at that time?
Perhaps the Obituary - if one was published -for the father
or other siblings - might show if Patrick HENES name appears.
Searching Online White Pages Directory MyTelus.com for the HENES surname in Alberta shows only 4.
two without locations shown - one at Pincher Creek - pehaps family connected - may have some information.
Cheers, Stella