Another of Wallenberg's nieces, Louise von Dardel, is the main activist in the family and dedicates much of her time to speaking about Wallenberg and lobbying various countries to help uncover information about her uncle.
Wallenbergs niece, Louise von Dardel er familiens mest aktive og vier meget af sin tid til at tale om Wallenberg og udføre lobbyarbejde i forskellige lande for at prøve at afdække oplysninger om sin onkel.