User blog comment:Derax-Pagani/Thoughts based on 366: 1,000 Souls/@comment-4449950-20140109222000/@comment-24367018-20140109223449

Reading the first two points it's already reminiscent - if only slightly - of Gildarts' relationship with Cornelia... Perhaps Silver had a fling, want for a better expression, with Ur before having to leave for whatever reason. Said reason leads Silver to GrayMum. Each of whom fall in love with each other thus resulting in Gray. This could explain a possible age gap between Ultear, before Last Ages :P, and Gray?