On 24 February 1916 the members of the elder branch, namely the family of Count Clemens zur Lippe-Weissenfeld (1860-1920) and his legitimate male line descendants, were granted the title of Prince/Princess with the style of Serene Highness.
[2] On 9 November 1918, all other legitimate cadet male/female members of the younger Lippe-Weissenfeld branch were also upgraded from the title of Count/Countess with the style Illustrious Highness and granted the title of Prince/Princess with the style of Serene Highness by Leopold IV, Prince of Lippe, who officially renounced the throne of Lippe three days later, on 12 November 1918.
His grandson Clemens, 1st Prince of Lippe-Weißenfeld (1860–1920), acquired Schloss Proschwitz near Meissen by marriage to Baroness Friederike von Carlowitz in 1910.
After the German reunification of 1990, Prince Georg of Lippe-Weissenfeld, a younger son of Christian, 4th Prince of Lippe-Weissenfeld, re-purchased the estate and castle of Proschwitz and established the renowned wine estate Prinz zur Lippe, Saxony's largest private winery.
[6] Egmont's younger son, Prince Alfred zur Lippe-Weissenfeld (1881-1960), by virtue of marriage to Countess Anna von Goëss (1895-1972) came into a possession of Castle Alt-Wartenburg, where his son Prince Egmont of Lippe-Weissenfeld spent his youth and where his sisters, princesses Karola, Sophia and Theodora were born.