After the death of Rhaegar-
As Aerys Targaryen fought in the Battle of the Trident, his wife/sister and young son Viserys fled to their castle. Aerys had later perished in the battle but his wife Rhaella went into labor during a terrible storm and sadly died a while after - giving a set of twins new life, their names were Daenerys Targaryen and (Y/N) Targaryen.
As Viserys cried and screamed over his deceased mother he soon fell asleep next to her bed but little did he know... someone entered the room - looked around for any goods and came across you. Taking the newborn quickly before running out of the castle and off into a boat.