I was researching some more things about Narnia to write something and i ran into some inconsistencies in the timeline and i know this is nothing new.
There are some things that raise questions about the Narnia timeline and even the ages of the characters, but that's not what i want to talk about.
The unicorn 'Jewel' in TLB tells us that Swanwhite was the last queen before the invasion of Jadis, however in the chronology of some sites it appears that in the year 1502 Swanwhite also reigned before the invasion of the Telmarines. To be honest, i don't know where that came from because i don't remember it being mentioned in any books.
Perhaps there were only two Swanwhites; The first was the ancestor of the Pevensies (Jadis does not count as queen of Narnia for me) and in the year 1502 the second Swanwhite reigned, who perhaps used her name because she liked it or for honor.