Quote Sweetness24: Maybe 'Willow' is EJ's sister?
Chealsie should be a DiMera as hateful as she is!
Will we ever find out why Steve's death was faked, and his coffin switched with another one at his funeral?
The issue of Willow and EJ being sblings have already been debated, and I think the general consensus was a negative. We don't believe that Willow and EJ are siblings. We do get that Willow might be working for EJ.
Chelsea being a dimera? Anything is possible i suppose.
About Patch's history, you are probably better off doing your own research on that. You'll get FASTER answers that way.