Elfreda

From Old English Ælfþrȳþ (from ælf (“elf”) +‎ þrȳþ (“strength”)); later partly merged with æþel (“noble”) +‎ þrȳþ (“strength”) ( =Audrey).

Elfreda

1. A female given name from Old English borne by a medieval English queen; rare today.
   • 1914?, Jessie Graham Flower, Grace Harlowe's Fourth Year at Overton College

     “When you are at Wayne Hall do as the Wayne Hallites do,” quoted Miriam, who had followed Elfreda into the room.

• Alfreda

• Federal, federal