Princess Louise Sophie of Schleswig-Holstein-Sonderburg-Augustenburg
Prince Leopold Friedrich of Prussia.jpeg
Prince Friedrich Leopold of Prussia (1895–1959)
Lugano, Cimetière de Castagnola, Tombe de Frédéric-Léopold de Prusse (1895–1959) 1.jpg
p=friedrich leopold;n=von hohenzollern;oc=1
Royalty digest quarterly : Royalty digest quarterly is published by Rosvall Royal Books as a successor to Royalty digest - a journal of record, published 1991-2005 by Piccadilly Rare Books