Hi John
Little info on the other Kissacks , but it shows :

John Kissack , born 1875 , entered DIH 12/03/1885, aged 10 , went to Canada on the "Siberian" 1889 aged 14.

William Jnr went to Canada 1887 on the Siberian - no other info

William Snr went to Canada 1885 , no other info.

Assume you have some of his North American Census details, which look strange (from the IGI) ?

1916 Census Saskatchewan, Canada aged 43 as a widower ?? and is a "roomer"

1930 Census Seattle City U.S. aged 57 with wife and kids , immigration year 1916 , wife and eldest child born Canada.

Cheers
David