Board Thread:Questions and Answers/@comment-34348110-20180115090845/@comment-31089351-20180115102016

Rhaegar only had one child with Lyanna Stark: Jon Snow/Aegon Targaryen. In the A Song of Ice and Fire novels, Rhaegar Targaryen is four years older than Eddard Stark. There is a twenty-five year gap between Rhaegar's birth and his sister Daenerys Targaryen's birth, and six children were carried by Queen Rhaella Targaryen during this time, but there were complications such as stillbirth and premature birth that prevented these children from reaching adulthood.