Ethelredus

• Æthelredus, Aethelredus, Athelredus, Adelredus

From Old English Æþelrǣd, Æþelred, Æðelred, from Proto-Germanic *Aþalarēdaz.

• (Classical Latin) IPA^(key): [ɛ.tʰɛɫˈreː.dʊs]
• (modern Italianate Ecclesiastical) IPA^(key): [e.t̪elˈrɛː.d̪us]

Ethelrēdus m sg (genitive Ethelrēdī); second declension(Medieval Latin, New Latin)

1. Ethelred, Aethelred
   1. a male given name from Old English Æþelræd (“noble counsel”), meaning “well-advised”, equivalent to English Ethelred, Aethelred, or Æthelred; variant forms Aethelredus, Æthelredus
      1. a male given name of historical usage, notably borne by Ethelred I, King of Wessex between 865 and his death in 871
      2. a male given name of historical usage, notably borne by Ethelred II “the Unready”, King of the English between 978 and his death in 1016

Second-declension noun, singular only.