Maelor Targaryen

Maelor Targaryen is the second son of King Rhaegar I Targaryen and his spouse Olenna. This makes Maelor the brother of King Aenar I Targaryen and for a while he was the second in line to be King of the Seven Kingdoms. However as the succesion was reasurre by the birth of his many male nephews, sons of Aenar, he was allowed to grant his son the founding og House Targaryen of the Stepstones. He married lady Maegelle Whitefyre with whom he had two sons, Maekar Targaryen of the Stepstones and Aemond Targaryen of the Stepstones. Maegelle also suffered from a miscarriage, a stillborn daughter and a little daughter who died in the craddle of sudden baby death.

As it's tradition among members of House Targaryen, he had a dragon egg placed on his craddle that hatched to become the Dragon Euraxes, a marvellous female dragon beast of white scales. Euraxes latter had three clutches of eggs from which most of the Targaryen of the Stepstone's dragons were born.