The Golden Dragon ( HotD x Ouat)

While being held prisoner by The Evil Queen, Belle discovers she's pregnant. After she gives birth The Evil Queen takes the baby and erases Belles memory of ever being pregnant. She then gives the baby to her huntsman to get rid of it. The Huntsman takes the baby to the forest, when a storm blows in and wiskes in and takes the baby. And transports it to another land, on Dragonstone.

The baby is then found by a pregnant Aemma Arryn, and decides to adopt the baby.