New theory a foot!

So there's this new theory out there that instead of Tamara being the daughter of the fairy godmother that Rumple killed she maybe the daughter of the swash buckling couple Robin Hood and Maid Marion. This theory has just surfaced so there is no reasoning to back this up. But this is what the site is for all theories and stories pertaining to OUAT! So what do you think? Could this be their daughter?
Let's hear it!!!