Here’s a case in point why I think Ultimania guides are NOT canon.
http://en.wikipedia.org/wiki/Image:Ivalice-time.jpg
The first problem is obviously the fact that the writer doesn’t even know if the St. Ajora mentioned in FF12 is the same as the one in FF Tactics (hence the gray box).
The second problem is worse, though: the guide there gives St. Ajora’s creation of a new religion as decades after the events of FF12. However, the clan primer of FF12 has this to say in “The Light of Kiltia”:
“Religion begun by the prophet Kiltia over two millenia ago. […] Several years after Kiltia’s founding, Saint Ajora began a new teaching, claiming that Faram alone was the one true god, the popularity of this new sect further lessening the power of the Light.”
This places Glabados’s founding as two thousand years before FF12. Supporting this is the fact that in the ending, Balthier mentions the Cache of Glabados in Bervenia, indicating clearly that Glabados already existed before FF12 took place.
Hence my conclusion, that Ultimania is full of crap.