I have been researching the name and origin much lately, and this is some info I have come up with.The name is derived from the anglo/saxon name Dene(valley). This had different variations , Dean,Dene,Deane,Adeane.The name Dene(Deane)came from only 4 distinct Dene(Deane)families in England, with one branch being brought in with the Danish invaders of the 9th century and another from Normandy(that may be the French connection). As with many names that were created in those times , surnames were derived from different things. Some were to describe the jobs they did. The town builder was then called say, John Carpenter. The town cook, John Cook and so on. A Carpenter in one town was not related per say to a Carpenter in another town. The names also came from where they lived. Dene meant valley, so there fore John Dene was John from the Valley. If more than one lived in the area, then It became John Endedeane , or John from the End of the Valley. Old English spelling of End is Ende.Between the 15th and 18th centuries, many families migrated to Ireland, Scotland. and to the colonies due to religious persecution. So there lies a connection. Now bring in the different spellings and definitions from diferent countries and it all kind of makes sense. Again this is what I have come up with. I am contiuing to find more info out daily.