Maybe not multiple personalities but certainly she is referenced by multiple names considering the Kebra Nagast,, which is older than the Quran, does not refer "The Queen of the South" by the name Bilqis.
http://en.wikipedia.org/wiki/Kebra_Nagast
The Arabic transliteration was derived from the ealier Geez.
((((((sigh)))))) the word thick comes to mind...and he calls himself a learned muslim?..