Allison, meaning Alicent Hightower with King Viserys I Targaryen, has four children with him: Aegon, Helaena, Aemond, and Daeron.

Quick Scoop

  • Aegon is their eldest son.
  • Helaena is their daughter.
  • Aemond is another son.
  • Daeron is the youngest son.

So the answer is 4 siblings total for the children shared by Alicent and Viserys.