Board Thread:Spoilers!/@comment-25345262-20160724231934/@comment-24674051-20160725174949

Ok, disregarding the hypothetical proposition of Serpents and Dragons interbreeding...

Someone earlier pointed out the timeline, and that is probably of greater import. Maleficent was pregnant with Lily at the same time as Snow was pregnant with Emma. Which puts the events most likely within the final year prior to the DC.

Meanwhile, Jafar would have been in Wonderland trying to track down Cyrus's bottle. the events of Jafar's capture of Cyrus (but not the bottle) predate the DC, but probably not by much. The point being that Jafar was in Wonderland, not the EF, at the time that Maleficent became pregnant.

In fact, I would say that the events in 6x01 likely occur just before Jafar goes to wonderland, and probably right after he captures Amara. In "The Serpent" (Wx4) in Wonderland, Jafar tells Amara that he has located the final bottle in Agrabah and turns her into the staff. In "Trust Me" (Wx2) Jafar finds the bottle in Agrabah, only to have it wished away (which is how it landed in wonderland). My guess is that it is between these 2 events  that Jafar pays Aladdin a visit.

Ok, sorry for the side track. back to the topic, I think the timeline for Jafar simply does not support the possibility of him being the father of Lily.