Older Canadian boxers that have disappeared

[Nameless]

Hi there, was wondering if anyone could give me any information on some older canadian boxers that seems to have just disappeared? Boxers including Larry Kerney, Tristian Judge, and Taylor Wentworth...anyone with any information?? Where they are now, how to contact them? If they're still boxing?

Kirk Johnson, more or less retired with money and just never came back to the Ring.

Why to they have to be canadian, by the way?