Welcome to Flyertalk, although you're not going to like the verdict arising from your first post here.

It is firmly established policy that air tickets are not transferable and there is no such thing as a "good enough" reason to grant a special waiver. Your complaint reminds me of the Everglades tourist who walked off a trail, right past a sign warning of dangerous alligators, and into a swamp where she was promptly attacked by alligators. Recovering in hospital, she was asked by sheriff's deputies if she hadn't seen the sign. "Oh, yes," she said, "but I didn't think that meant me."

Your career changes are of no impact /interest to the airlines, I'm afraid. A name change is indeed too much to ask under standard ticketing rules.

Your best bet is to cash the tickets in and keep their value on account with the airline -- it's good for one year -- using the sum, less change fees, for future travel for the originally booked parties. Your relatives who want to visit you in Country X will have to buy new tickets.