Sat 11 Nov 2002'Unofficial' Irish ambassador in BonnCAITRÍONA HERTZ-WANDERSLEB: Caitriona Hertz-Wandersleb, who has died aged 83, taught Irish at the University of Bonn and was a well-known figure in the city's political and academic circles for 30 years.She enjoyed socialising and, with her striking good looks and extrovert personality, she was the life and soul of every party she attended.