"August Philipp Karl of Limburg Stirum (1721–1797), count of Limburg Stirum and Bronckhorst, was the son of Otto Leopold Count von Limburg Styrum und Bronckhorst, Lord ...
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of Gemen and Raesfeld (1688–1754) and Anna Elisabeth countess of Schönborn (1686–1757).
August Philipp was Prince-Bishop of Speyer and sovereign Lord zu Gemen from 1771 till 1797." - (en.wikipedia.org 23.06.2020)