Delena attended the wedding of her cousin Selyse Florent to the brother of King Robert I Baratheon, Stannis Baratheon. Delena served as one of Selyse's bedmaids. At the ceremony she was carried up to the wedding bed by the king, before the traditional bedding ceremony, and they conceived a bastard. Robert acknowledged the boy as his, and he was named Edric Storm. Delena had been a maiden prior to the incident.
She has since been married off to Hosman Norcross, a knight of House Norcross who was sworn to Ser Colin Florent, Delena's father. Colin rejected an offer from Lord Tywin Lannister to wed Delena to Tyrion Lannister.