Peter, 1st Prince of Sayn-Wittgenstein-Ludwigsburg-Berleburg (‹See Tfd›German: Ludwig Adolf Peter Fürst zuSayn-Wittgenstein-Berleburg; ‹See Tfd›Russian:
their progenitor, Ludwig I, Count of Sayn-Wittgenstein (1532-1605), they were the: Princes (Fürsten) zuSayn-Wittgenstein-Berleburg, descended from Count