Bertrand I of Forcalquier was Count of Forcalquier from 1129 to 1144. He was the second son of William III and Gersende of Albon.
He married Josserande de Flotte, daughter of Arnould de Flotte and Adelaide de Comps. Their sons, Bertrand and... Wikipedia
Parents: William III of Forcalquier
Children: Bertrand II of Forcalquier and William IV of Forcalquier
Great-grandparents: Ermengol III, Count of Urgell, William Bertrand of Provence, and Adelaide of Besalú
Grandchildren: Garsenda I of Forcalquier, Guillaume de Sabran, Cecile de Forcalquier, and more
Partner: Josserande de la Flotte