This may add to the Obi-Wan clone idea or not:
"Ben", Hebrew for "son of", common in inscriptions on gravestones.
so, Ben Kenobi could means son of Kenobi.
Sometimes in Sci-fi stories a clone will be called an offspring of the original. A son is a male offspring.
maybe Ben Kenobi means an offspring of the original Kenobi.
Now, I do not think that the Ben/obi-wan in Star Wars (Ep IV) is a clone. I know he was not.
But, the real obi-wan in hiding may have been using the name of the clone of himself in the OOTP backstory.