The name Duane originated from the Old Irish Gaelic word "dubhan", which means "little dark one" or "little black one". It is derived from the word "dubh", meaning "black" or "dark". The name first appeared in Ireland as early as the 5th century AD, during the time of the ancient Celts and the spread of Christianity in the region.

Duane was a common name among the Irish and Scottish Gaels throughout the Middle Ages. It was often associated with individuals with dark hair or complexions. The name was also sometimes spelled as "Duana" or "Duana" in early records.

One of the earliest recorded instances of the name Duane can be found in the Annals of Ulster, a chronicle of medieval Irish history. The annals mention a man named Duane mac Fiachna, who was a king of Dál Riata (a medieval Scottish kingdom) in the late 6th century.

In the 9th century, a famous Irish monk and scholar named Duane Dál Máil Thuile wrote several religious texts and commentaries on the Bible. He was renowned for his knowledge of Latin and Greek, and his works were widely studied in medieval monasteries.

During the Norman invasion of Ireland in the 12th century, a notable figure named Duane O'Conor led the resistance against the English forces in Connacht. He was a descendant of the ancient high kings of Ireland and fought bravely to defend his lands until his death in 1168.

In the 16th century, a Scottish nobleman named Duane Stewart was known for his loyalty to Mary, Queen of Scots. He was a member of her privy council and played a significant role in the Scottish Reformation.

Another notable figure with the name Duane was an Irish poet and soldier named Duane Mac an Bhaird, who lived in the 17th century. He composed several poems and ballads that celebrated Irish culture and resistance against English rule.