Origin of the name ETHELDREDA.
Etymology of the
Meaning of the baby name ETHELDREDA.
Latinized form of Anglo-Saxon Æthelthryth
(q.v.), meaning "noble threatener," from Old English æðel
"noble," and þryð "threat."
It is connected with the German name Ediltrud
(History of Christian Names, Yonge, 1884)
three English Saints have borne this noble old Anglo-Saxon name, and of
these the most noted is Saint Etheldreda or Ediltrudis,
more generally known as Saint Audry...
(Girls' Christian Names, Swan, 1905)