"Otto Christoph Freiherr von Sparr (13 November 1599 or 1605 – 9 May 1668) was a Generalfeldmarschall of Brandenburg-Prussia.
Sparr came from a noble family from the Margraviate of Brandenburg. He was born either in Lichterfelde near Eberswalde in 1599 or Prenden near Bernau in 1605.
Sparr was an imperial officer during the Thirty Years' War. He campaignly mainly in northwestern Germany during the war, having a largely independent command in Westphalia. He besieged Essen in 1641 and fought near Stargard. Sparr was captured near Warendorf.
After the war in 1649, Sparr led the Electorate of Cologne's campaign against Liège; in December of that year he entered the service of Frederick William, Elector of Brandenburg." - (en.wikipedia.org 11.08.2021)
