Male'dai is no one I'on would have heard about, nor is her master... the name of whom hasn't even been mentioned anyway for him to recognize. Nimbus he obviously wouldn't have heard about, and her city (as is the case with most cities of the true deo'iel) isn't widely known either.

Concerning Aemoten, still not entirely sure about that. Thomas probably wouldn't, given that Aemoten is the only of them that he's been informed to keep an eye out for, and back when William left Etakar hadn't showed up yet. The guards would probably inquire as to whether the beast was safe, but make no concerted effort to stop it (or him or Thaler) from entering.