User blog comment:IamJakuhoRaikoben/Chapter 390: The Story of a Boy, Review./@comment-117.213.83.251-20140627161331/@comment-108.28.233.191-20140628064945

@LordLuminous

I'm guessing that you're looking at Mangastream's rather dubious translation? Mangapanda's statement has Silver saying that Ur kept him trapped for 10 years, which makes perfect sense. Gray joined Fairy Tail before Erza, who joined 8 years before the start of the series. Deliora being frozen 10 years before the start of the series gives Gray two years in which to travel to, and join Fairy Tail before Erza shows up. So Ur used Iced Shell when Gray was 8, meaning Deliora destroyed his hometown probably when he was 6-7.