Erda is of Germanic origin, derived from the Old Norse word 'jörð', meaning 'earth'. It was used by Richard Wagner as the name of one of the gods in his opera cycle 'Der Ring des Nibelungen'. Erda appears as a wise, prophetic goddess who plays a significant role in the creation and fate of the ring.
The name Erda was consistently popular over these years, with five babies named Erda born each decade between 1914 and 1936, totaling to fifteen children sharing this unique name across the period.