Back بالدوين الأول، مارغريف فلاندرز Arabic بالدوين الاول مارجريف فلاندرز ARZ Балдуин I (Фландрия) Bulgarian Balduí I de Flandes Catalan Balduin I. Flanderský Czech Balduin I. (Flandern) German Βαλδουίνος Α΄ της Φλάνδρας Greek Balduino I de Flandes Spanish Balduin I.a Flandriakoa Basque Baudouin Ier de Flandre French
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Baldwin I (probably 830s – 879), also known as Baldwin Iron Arm (Dutch: Boudewijn met de IJzeren Arm; the epithet is first recorded in the 12th century), was the first margrave of Flanders, which evolved into the County of Flanders.