Rhaenyra was concerned about her line of succession and the fate of House Targaryen, so she proposed a marriage between Daemon Targaryen's firstborn and Laena Velaryon. The girl had pure Valyrian blood, making Jacaerys' lineage pure, however, the two had never met before.

This intrigued him because Daemon's daughter carried the reputation of being an Targaryen possessing her father's personality and to be a dragon rider as unshakable as her mother.