User blog comment:MeDeoPal/On the Origin of Titans and Shifters/@comment-112.198.90.111-20130811074800/@comment-4820738-20130815085734

I'm pretty sure, Eren wasn't turned into a titan, nor was his father. They were like the other shifters, Annie, Ryiner, Burthold, amd Ymir, Ryiner and Burthold were kids when they were said to still be shifters.