Duncan Targaryen, also called Duncan the Small or the Prince of Dragonflies​, was the eldest son and heir of King Aegon V Targaryen.



Duncan was the eldest son and heir of King Aegon V Targaryen. He was named in honor of his father's great friend Ser Duncan the Tall, who had also become Lord Commander of Aegon V's Kingsguard. He died alongside his father and his namesake in the Tragedy at Summerhall.[1]

Season 4

He is mentioned in his namesake's entry in The Book of Brothers.

​Family tree

Aerion family tree
Aerion Targaryen
Aemon Targaryen Maesters-ShieldNight's-Watch-Main-Shield
Aegon V family tree
Aegon V Targaryen
Targaryen Queen
Duncan Targaryen
Aerys Targaryen template Image
Aerys II Targaryen
Rhaella tree
Rhaella Targaryen
Daeron Targaryen
Elia Martell House-Martell-Main-Shield
Rhaegar Targaryen
Lyanna tree
Lyanna Stark House-Stark-Main-Shield
Viserys tree
Viserys Targaryen
Daenerys tree
Daenerys Targaryen
Drogo tree
Rhaenys tree
Rhaenys Targaryen
Aegon Targaryen
Jon Snow family tree image
"Jon Snow"
(Aegon Targaryen)

In the books

In the A Song of Ice and Fire novels, Duncan was the eldest son of King Aegon V Targaryen, named after his close friend Ser Duncan the Tall. He once defeated the ten-year-old Barristan Selmy in a tourney at Blackhaven. Prince Duncan took pity on the small knight and jousted against him when no one else would, giving Barristan the nickname "the Bold". Years later he was defeated by Ser Barristan at a winter tourney in King's Landing.

Prince Duncan fell in love with a woman known as Jenny of Oldstones and loved her so much he gave up his crown for her and married her against his father's wishes. Duncan's defiance caused significant trouble for his father, as the Prince of Dragonstone had been engaged to a daughter of Lyonel Baratheon, the Lord of Storm's End. Although Duncan renounced his right to the throne upon his marriage to Jenny of Oldstones, Lord Baratheon was angered by this event and briefly renounced his alliegance to the Iron Throne, declaring himself Storm King. His rebellion was brief and he was defeated in a trial by battle by Ser Duncan the Tall, Duncan's namesake and the Lord Commander of the Kingsguard. Following the end of the Baratheon rebellion, Aegon V betrothed his daughter Rhaelle to Ormund Baratheon, the heir to Storm's End. Duncan nevertheless remained a significant presence at court in the latter years of his father's reign, even being involved in the planned campaign against the Ninepenny Kings in the Stepstones (to whom he gave their name by a jape made at court). 

Duncan's love for Jenny of Oldstones inspired a song that was very popular in circles that admired "courtly love" and the Prince of Dragonflies and his bride remained favourites of the smallfolk for many years.

He died in the Tragedy at Summerhall, alongside his father and his namesake, before the war began in the Stepstones.

Behind the scenes

Due to the simplification of the Targaryen lineage by removing Jaehaerys II from the line of kings and making Aerys and Rhaella the children of Aegon V rather than his grandchildren, Duncan is Aerys and Rhaella's brother in the TV series though he was their uncle in the books.

See also


v  d  e
Lord: Queen Daenerys Targaryen Heir: None
Seat: Dragonstone Lands: Dragonstone
Title(s): Queen of Meereen · Khaleesi of the Great Grass Sea · Queen of the Andals, the Rhoynar, and the First Men (claimant) · Lady Regnant of the Seven Kingdoms (claimant) · Protector of the Realm (claimant)
Ancestors:Aenar · Daenys · Aegon I, the Conqueror · Visenya · Rhaenys · Aenys I · Maegor I, the Cruel · Rhaena · Aegon · Jaehaerys I, the Concilliator · Alysanne Targaryen · Viserys I · Rhaenys · Daemon · Aemma Arryn · Rhaenyra · Alicent Hightower · Aegon II, the Usurper · Helaena Targaryen · Aemond · Aegon III · Viserys II Targaryen · Jaehaera · Jaehaerys · Maelor · Daeron I, the Young Dragon · Baelor I, the Blessed · Aegon IV, the Unworthy · Naerys · Aemon the Dragonknight · Daena the Defiant · Rhaena · Elaena · Daeron II, the Good · Daenerys of Sunspear · Myriah Martell · Daemon Blackfyre · Brynden Rivers · Aegor Rivers · Shiera Seastar · Baelor Breakspear · Aerys I · Aelinor · Rhaegel · Maekar I · Dyanna Dayne · Aerion Brightflame · Aegon V, the Unlikely · Duncan the Small · Daeron
Deceased members:Aerys II, the Mad · Rhaella Targaryen · Rhaegar Targaryen · Elia Martell · Rhaenys Targaryen · Aegon Targaryen · Viserys Targaryen · Drogo · Rhaego · Aemon Targaryen
Household:Ser Jorah Mormont · Tyrion Lannister · {Ser Barristan Selmy} · {Rakharo} · Kovarro · Aggo · {Irri} · {Doreah} · Jhiqui · Malakho · Missandei · Grey Worm · Daario Naharis · {Mossador}