Prince Christian-Sigismund of Prussia

Prince Christian-Sigismund of Prussia (born March 14, 1946) is one of the three paternal uncles of Georg Friedrich, Prince of Prussia, head of the House of Hohenzollern since 1994, which reigned over Germany until 1918. He is the youngest of four sons born to Louis Ferdinand, Prince of Prussia (1907-1994) and Grand Duchess Kira Kirillovna of Russia (1909-1967). his eventual marriage to a countess, although non-mediatised, was also accepted as "equal" by his father.
Prior to his death, Louis Ferdinand Sr. made Georg Friedrich his principal heir, designating Christian Sigismund as guardian responsible for his education and management of his financial share in the Hohenzollern trust during his minority.
However, by the time of his nephew's marriage, alienation among the male dynasts in the family had become entrenched. After their father's death, Friedrich Wilhelm and Michael, whose first marriages to commoners had ended in divorce, retracted their renunciations during their second marriages. Christian Sigismund's marriage having been recognised, he and his son remained Hohenzollern dynasts; nonetheless he joined his two surviving brothers in filing a lawsuit against Georg Friedrich to dissolve the Hohenzollern trust and obtain larger appanages. None of the three brothers attended their nephew's wedding in 2011, although Christian Sigismund's son and younger daughter were in attendance., whom he had legitimised:
*Isabelle-Alexandra Angélique Anne-Kathrine Grandmontagne, then Prinzessin von Preußen (born 18 September 1969)
He also has two children with his wife Countess Nina Helene Lydia Alexandra zu Reventlow (born Kiel, 13 March 1954) whom he married on September 29, 1984, at Gut Damp an der Ostsee in Holstein, daughter of Count Carl Ludwig zu Reventlow and his second wife Nina Pryadkin.
*Prince Christian Ludwig Michael Friedrich Ferdinand of Prussia (b. 16 May 1986)
*Princess Irina Maria Nina Kira of Prussia (b. 4 July 1988)
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