Hi Fellow Enborgs!
Just stumbled onto this message board today. I also heard that our last name was fictitious. Somehow our relatives from Sweden thought it would be easier to remember than their original surnames and would help them to settle into either the U.S. or Canada. From what I was told as a youngster it means either last hill or last castle. My original Enborg connection is Swan Enborg from Bursuryd, Sweden. Does that ring a bell for anyone?