Donncuan mac Dúnlaing, King of Leinster

DUNLANG (-1013). King of Leinster. The Annals of the Four Masters record the death in 1013 of “Dunlang son of Tuathal king of Leinster”[641]. m ---. The name of Dunlang´s wife is not known. Dunlang & his wife had six children:

a) GILLA COEMGIN (-killed [1017/18]). Crown Prince of Leinster. The Annals of Tigernach record that “Gilla Coemgin son of Dunlang crownprince of Leinster” was killed in [1017/18] “by the Leinstermen”[642].
b) DONNCUAN “the Simpleton” (-killed 1015). King of Leinster. The Annals of the Four Masters record that “Donncuan i.e. the Simpleton son of Dunlaing lord of Leinster and Tadhg Ua Riain lord of Ui-Drona” were killed in 1015 by “Donnchadh son of Gillaphadraig at Leithghlinn”[643].
c) UGAIRE (-killed Dubloch [1022/24]). King of Leinster. The Annals of Tigernach record that “Ugaire son of Dunlang king of Leinster” defeated “Sitric son of Olaf with the Foreigners of Dublin at Dergnae mo Goróc (Delgany)” in 1021[644]. The Annals of Tigernach record that “Augaire son of Dunlang king of Leinster” was killed “at Dubloch, by Donn slébe” in [1022/24][645].
d) DONNCHAD (-killed [1036/37]). King of Leinster. The Annals of Tigernach record that “Donnchad, son of Dunlang, king of Leinster” was blinded by “Donnchad Mac Gilla Pátraic” in 1036 and died[646]. The Annals of Inisfallen record the death in 1037 of "Dúnlang´s king of Laigin by the Osraige”[647].

i) DOMNALL (-1039). Crown Prince of Leinster. The Annals of Inisfallen record the death in 1039 of "Domnall son of Donnchad royal heir of Laigin”[648]. The Annals of Tigernach record the death in 1039 of “Domnall son of Donnchad king of the Húi Faeláin…slain by Domnall Húa Fergail king of the Forths”[649].

e) MURCHAD (-killed in battle Mag Muilchet 1042). King of Leinster. The Annals of Tigernach record that “Murchad son of Dunlang king of Leinster” was killed by “Gilla Pátraic son of Donnchad king of Ossory and by Mac Craith Húa Donnchada king of the Eoganacht ´load-of-plunder´ on Mag Muilchet in Leix” in 1042[650].
f) MAILCORCRE . The 13th century History of Gruffydd ap Cynan records that the "grandmother...his mother´s mother" of King Gruffydd was "Mailcorcre daughter of Dunlang son of Tuathal King of Leinster"[651]. m OLAF of Dublin, son of SIHTRIC King of Dublin & his wife --- ([after 1013]-murdered 1034).

• Charles Cawley's Medieval Lands: IRELAND