|Birth||January 1, 1517|
|Death||December 21, 1576 (Bückeburg, Schaumburg, Lower Saxony, Germany)|
|Authority||ISNI id Library of congress id VIAF id|
Otto IV of Schaumburg (1517 – 21 December 1576) was a German nobleman. He was a ruling Count of Schauenburg and of Holstein-Pinneberg. He was a son of Jobst I and his wife Maria of Nassau, a daughter of Count Johann V of Nassau-Vianden-Dietz.
He adopted the teachings of Martin Luther. However, with respect to his elder brothers Cologne's Archbishop-Electors Adolphus III (reg. 1547–1556) and Anthony I (reg. 1557-1558) he refrained from open confrontation. In 1559 he officially began the Reformation in Schauenburg and Holstein-Pinneberg. These areas remained Lutheran throughout the Counter-Reformation and into modern times.
Marriages and issue
Otto first married Mary (*1527–1554*), daughter of Duke Barnim XI of Pomerania-Stettin. Mary and Otto had four sons:
- Hermann (*1545–1592*), Prince-Bishop of Minden (1566–1581)
- Otto (*1545–1572*), (mentally insane)
- Adolphus XI (*1547–1601*), count regnant in Schaumburg and Holstein-Pinneberg
- Anthony (*1549–1599*), Prince-Bishop of Minden (1587–1599)
In 1558 Otto married a second time, with Elisabeth Ursula (*1539–1586*), a daughter of Ernest I, Duke of Brunswick-Lüneburg. Elisabeth Ursula and Otto had two daughters and one son:
- Mary (*1559–1616*) married in 1591 Count Josse of Limburg-Styrum (*1560–1621*)
- Elisabeth, married in 1585 Count Simon VI of Lippe (*1554-1613*)
- Ernest (*1569–1622*), count regnant of Schaumburg and Holstein-Pinneberg as of 1601, elevated to Prince of Schaumburg in 1619.