Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Speyer Cathedral' has mentioned 'Frederick Barbarossa' in the following places:
Occurrence Sentence Text Source
Beatrice I (died 1184), second wife of Frederick Barbarossa and their daughter Agnes King Philipp of Swabia (died 1208), son of Frederick Barbarossa King Rudolph of Habsburg (died 1291) King Adolph of Nassau (died 1298) King Albert I of Germany (died 1308), son of Rudolph of Habsburg