Ulick Fionn Burke, 6th lord of Clanricarde (died 1509) was an Irish warlord.
The Annals of the Four Masters record Ulick's accession in 1485:
Ulick Burke, Lord of Clanrickard, heir of the Earl of Ulster, a general patron of the learned of Ireland, died; and his son, another Ulick, took his place. An army was led by this son into Machaire-Chonnacht, and into Hy-Many, and burned and destroyed corn and towns; and, among other things, he burned and demolished the castle of Tulsk, and the prison.
Burke was an especially aggressive warlord, and sought to impose his authority over not only his fellow Bourkes in north Connacht, but over the Ui Maine, the Síol Muireadaigh and the independent towns of Athenry and Galway.
In 1486, A numerous army was led by O'Donnell into Connaught, and another by Mac William of Clanrickard, to oppose him. On coming together, however, they agreed to conditions of peace and amity. Felim Finn O'Conor repaired to these armies, and gave himself up into the hands of O'Donnell, in behalf of his territories and chieftains. The peace of Sil-Murray was concluded on this occasion; and the son of Felim Finn was taken as a hostage, instead of Felim Finn himself, by O'Donnell, who took him with him into Tirconnell, by the advice of Mac William of Clanrickard.
The following year, An army was led by Mac William of Clanrickard (Ulick, the son of Ulick of the Wine) into Hy-Many, by which he destroyed the bawn of Athliag Maenagan, and destroyed much corn and many towns throughout Hy-Many and Machaire-Chonnacht. Rossa, the son of Felim Finn, was slain by one shot of a dart by a man of this army. The sons of Felim Finn O'Conor (i.e. Hugh, Turlough, and Conor) passed by them to Baile-tobair-Bhrighde, which they burned and plundered. Dermot, the son of Donnell, son of Turlough Dall O'Conor, while pursuing them, was slain at Roscommon; but his people followed them into Clann-Conway, and took some horses from them. It was at the instance, of O'Conor Don (i.e. Hugh, the son of Hugh, son of Turlough Don) that this incursion was made. The Sil-Murray concluded a peace among themselves, after having refused to do so, by the advice of their friends.
Gearoid Mór Fitzgerald, 8th Earl of Kildare, in an attempt to restrain Burke's power, married him off to his daughter, Lady Estacia FitzGerald [Questionable information, needs source]. However, there was only so much he could do against Burke on a local level. Neither could he prevent Burke from taking additional wives, including Slaine Ni Con Mara.