Can my father or my son use my non-refundable tickets?
(this ticket is not eligible for mileage so our frequent
flyer numbers are NOT in the airline's records) I have
already flown on the outbound, but because I had to
return early, I bought another one-way ticket. Now there's
a one-way SFO-JFK ticket left.

All 3 of us have the same identical name. (we don't even
have JR, SR, III after it) All our driver's licenses and
passports says EXACTLY THE SAME THING. ([John Q. Doe -- real name edited by moderator per TOS])
Yes, even the same middle name/initial.

When I originally used the first leg, the agent only took
a quick glance at my driver's license for 2 seconds, so
I assume that info is not in the records either...

Any thought on this?