Joanna Grommicka (born 1969) (b. 1969) Parents Jerzy Grommicki Countess Elisabeth Potocka Children Louis Dwernicki z Dwernik Rose Dwernicka z Dwernik Bianka Dwernicka z Dwernik Pauline Dwernicka z Dwernik Siblings Piotr Jan Jerzy Grommicki Christine Grommicka Partners Roman Joseph Antoine Dwernicki z Dwernik