|Died||In or between 201 AC and 209 AC|
|Spouse||King Maekar I Targaryen|
Aegon V Targaryen
The World of Ice & Fire (appendix)|
The Hedge Knight (mentioned)
Lady Dyanna Dayne was a member of House Dayne during the reign of King Daeron II Targaryen. She married Daeron's fourth son, Prince Maekar, and together they had six children: Daeron, Aerion, Aemon, Aegon, Daella and Rhae Targaryen. She died before 209 AC, well before Maekar's ascendance to the Iron Throne in 221 AC, thus she never became queen consort.
On his way to the Ashford tourney in 209 AC, Ser Duncan the Tall mistook young Prince Aegon Targaryen for a stableboy. When Aegon stated that his mother was dead, Dunk assumed the boy was an orphan.