I have had the email below from the Passport Office which basically closes down my enquiry. I add in full as the information may help other researchers:
Thank you for your message of February 6, 2025.
Please note that Canadian passport records are only retained for 75 years. Unfortunately, we are unable to fulfill your request, as the information you are seeking is no longer available. Additionally, original passport application forms and photos are not kept by the Program.
Access to Family Records for Non-Residents of Canada
Non-residents of Canada are only eligible to request their own personal information under the Privacy Act. However, the following options may be available for obtaining records related to deceased family members:
If the personal information you are seeking pertains to an individual who has been deceased for more than 20 years, a Canadian citizen or permanent resident may submit an Access to Information Act request on your behalf. Please note that any available records will be provided directly to the individual who submitted the request.
If the personal information you are seeking pertains to a living individual, you may submit a request under the Privacy Act, but only with the individual's written consent. The written authorization must explicitly state that you are permitted to make the request and receive the information on their behalf.
For more details on submitting a request, please visit IRCC’s Access to information and privacy webpage:IRCC ATIP.
Immigration and Genealogical Records
If you are seeking information on an individual who arrived in Canada before 1936, Library and Archives Canada maintains records of landing and immigration, including passenger lists from 1865 to 1935 and border entry lists from 1908 to 1935. These records are available free of charge.
Requests for these records can be sent to:
Library and Archives Canada
Researcher Services Division
Genealogy Section
395 Wellington Street, 3rd floor
Ottawa, Ontario
K1A 0N3
Fax: 613-995-6274
For more details, you may also wish to consult Library and Archives Canada’s Genealogy and Family History website for information about their records and resources.
We hope we were able to assist you.