Hanne Christiansen was the second daughter and third child of Godtfred Kirk Christiansen, who was the son of Ole Kirk Christiansen (founder of LEGO) and the CEO of LEGO from 1957 to 1979. She had an older sister, Gunhild Kirk Johansen, and an older brother, Kjeld Kirk Kristiansen, who will become the CEO of LEGO from 1979 to 2004.
in October 1969, Hanne and her father, Godtfred were driving home from a movie in the neighbouring town of Give. Their car skidded off and hit a tree. Godfred was able to survive with serious injuries, however Hanne was killed.