Hellenes

3 clues
Greeks
Herodotus and Hippocrates, e.g.
Paul and Frederika, recent royal visitors.
Similar answers:
Abatoutofhell
Abusiveness
Achenes
Acquisitiveness
Actofpoliteness
Adenese
Adiposeness
Adverseness
Agbellsandcockleshells
Agenesis
Aggressiveness
Agileness
Ahell
Akenes
Alenes
Alkenes
Allhell
Aloneness
Andreamitchell
Andshelldahlianolies