• Duhring, Duehring, Duering

Anglicisation of German Dühring or Düring.

During

1. (rare) A surname.
   • 1858, The Peterson Magazine, volumes 33-34, page 235:

     "What a woman she is!" muttered Biddy, stooping to pick up the scattered potatoes, "I don't see what Providence meant, a-putting such a saint along with an ugly, growling man like Mr. During. I believe he's in his second childhood, I do! […]

• Durgin, ungird