Princess Adelheid of Löwenstein-Wertheim-Rosenberg was born into the noble family of Löwenstein-Wertheim-Rosenberg. This family has a long history in Germany, known for its connections to various European royal families. Adelheid's lineage includes ties to the House of Löwenstein, which has produced several notable figures in European aristocracy. Adelheid's parents were Prince Karl of Löwenstein-Wertheim-Rosenberg and Princess Maria of Löwenstein-Wertheim-Rosenberg. She is part of a larger family that includes siblings and extended relatives, many of whom have also married into other noble houses, further strengthening their connections within the European aristocracy.