Starting with "hegre"—I know that is a name, probably HERA from the Herengracht (or Herengracht?) in Amsterdam, but actually, Herengracht is one of the main canals. Wait, maybe they're referring to HERA and David, as in David Bowie's song "Heroes", but that's probably not relevant here. Wait, HERA is part of the European Space Agency's mission. The HERA mission? Hmm, maybe not. Alternatively, Hera could be a name of a model or photographer? The name HERA and David might be associated with a photo production company or project.