Category : Otto, Duke of Brunswick-Luneburg (1572-1641)

**Otto III**
	Duke of Brunswick-Harburg (1572-1641)
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Date of birth	20 March 1572 (statement with Gregorian date earlier than 1584) ; Harburg
Date of death	25 February 1641 ; Harburg
Country of citizenship	Germany ;
Occupation	aristocrat ;
Noble title	duke ;
Family	House of Welf ;
Father	Otto II, Duke of Brunswick-Harburg ;
Mother	Hedwig von Ostfriesland ;
Sibling	Anna Margarete von Braunschweig-Harburg ; William Augustus, Duke of Brunswick-Harburg ; Duke Otto Henry of Brunswick-Harburg ; Christopher, Duke of Brunswick-Harburg ;
Spouse	Hedwig von Braunschweig-Wolfenbuttel (1621–) ;
Authority file
	Q96003 ; VIAF ID: 59940084 ; GND ID: 121425886
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English: Otto III, Duke of Brunswick-Luneburg, Lord of Harburg (20 March 1572 in Harburg ? 4 August 1641 in Harburg) was a titular Duke of Brunswick-Luneburg and ruler of the apanage Brunswick-Harburg.

Deutsch: Otto III. von Braunschweig-Luneburg-Harburg (* 20. Marz 1572 in Harburg; † 4. August 1641 in Harburg) war Inhaber der Herrschaft Harburg.