Apparently, not all Addy's are directly related to one another.Some came from Ireland, some came from England, some even came from Germany.(some say that these German Addy's were deported from England years ago).
Adding to the confusion is that once you start getting back into the early 18th, 17th century and before, you have variations in spelling.One "Addy" might have spelled his name one way, another could have spelled it another way. (Adde, Addi, Addie, Attie, Ade, etc).
If only they had developed hooked on Phonics earlier.LOL
There are at least 4 or 5 main branches of the Addy family in the USA, so the trick is figuring out which one it is.