Willem Arnold Alting Siberg (1778-1808) (1778–1808) Parents Pieternella Gerhardina Alting Johannes Siberg Children Françoise Catherine Emilie Elise Alting Siberg Pierre Gérard Alting Siberg Martha Maria Jacoba Adriana Alting Siberg Siblings Pieter Gerhard Siberg Partners Margaretha Jacoba van der Hoeven