I am going with the suggestion of three men.
Three transplanted Dubliners.
I know that this is Montreal around the early 1960s. My Dad, Jack, is the handsome man in the middle. On the right is my Uncle Brendan O'Shea, married to my Mom's sister Nellie. On the left, with the glasses (X 2), is Jim O'Connell, married to my Mom's youngest sister, Ursula.
Whose house this is? I can't figure out, nothing is familiar to me. I can guess it is probably the O'Shea's, and it might be on Durocher St. or else where they moved after Durocher.
I will have to ask my aunt.
Dad has his suit jacket on, but the other two are in shirt sleeves, rolled up.