You could do it like KTM does:
At the time the master target is set - if you can't find a target with the name, take the target of the player who send you the master target. Thats probably the master target send in your locale...
I just stumbled across this thread. currently I have been playing with Threat1.0 and Violation.. if i wanted to cover all bases as far as "reporting" my threat to my fellow guildies who are die-hard KTM users, I would want to install "ThreatToKTM", right? so that they can get threat reports from me into their KTM displays...?
Just wanted to post a positive report, I used Threat-1.0, Omen and ThreatToKTM (latest versions as off 2pm pst yesterday) in kara successfully, no problems, no weird bugs or anything! Thank you all for the wonderful addons!!!