Help with regiment identification

[KGarrad]

There's a list here of different regiments and their hackles:

https://en.wikipedia.org/wiki/Hackle

Perhaps a defunct regiment?

[ABradley]

In the photo the beret is swept over to the left of the head and the hackle is on the right.
I'm not an expert but I think this is not the normal style of dress?

Some of them are armed. Would this happen only in wartime?

[ShaunJ]

Cracked it. Irish Regiment of Canada. Sandringham, 8 August 1943.

More photos here (a little way down the page):  http://pipesforfreedom.com/webtxt/0515THE_IRISH_REGIMENT_OF_CANADA.htm

Notably  http://pipesforfreedom.com/images/051518Irish-royalty-01.jpg

and http://pipesforfreedom.com/images/051519Irish-royalty-02.jpg

[ShaunJ]

Another one from the same photo shoot:

https://pier21.ca/sites/default/files/walls/service/docimage000000028.jpg

(From https://pier21.ca/walls/Service/Pte-Charles-Joseph-Lutton)

[Regorian]

Well done.

[Treetotal]

Cracked it. Irish Regiment of Canada. Sandringham, 8 August 1943.

More photos here (a little way down the page):  http://pipesforfreedom.com/webtxt/0515THE_IRISH_REGIMENT_OF_CANADA.htm

Notably  http://pipesforfreedom.com/images/051518Irish-royalty-01.jpg

and http://pipesforfreedom.com/images/051519Irish-royalty-02.jpg

Wow....great work Shaun  ....I had to raise this as I knew you would eventually have the answer.

Carol

[ShaunJ]

The tartan was the key. It's very distinctive.

[ainslie]

Great sleuthing.  Most of us would have been well off the mark.
A

[Yogiyo1]

Wow!!! Thank you so, so much for all your help. This is wonderful.   

Now just have to work out where the family connection is!