|Born||In 131 AC, Storm's End|
|Father||Lord Borros Baratheon|
|Mother||Lady Elenda Caron|
Royce was the posthumous son of Lord Borros Baratheon of Storm's End by his wife, Lady Elenda Caron. Born seven days after his father died at the Battle of the Kingsroad, Royce succeeded him as the Lord of Storm's End and Lord Paramount of the Stormlands at birth. If a boy, Lord Borros had instructed Elenda to name their child Aegon, after King Aegon II Targaryen. However, she instead named him after her father, Lord Royce Caron of Nightsong.
During Royce's infancy, his mother Elenda ruled as regent. With the death of Aegon II and the ascension of King Aegon III Targaryen, Lady Elenda decided to not renew the war, fearing for her son's safety, for he was the future of House Baratheon.
|Unknown first wife||Rogar||Alyssa Velaryon||Borys||Unknown|
|Borros||Elenda Caron||Rhaenys Targaryen|