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The dance is named for the tune of the same name which John Drewry referred to as *a Gaelic song with a very catchy tune*. This tune was, and is, used by many bands in various reel sets, in addition to being the lead tune for this dance.  

The Gaelic name translates loosely as White Banner and is usually taken to refer to the Fairy Flag of Dunvegan kept at Dunvegan Castle, the seat of Clan Macleod on the Isle of Skye. The flag is the subject of numerous legends.

Note by John Drewry on [27-28]:  I am indebted to Derek Haynes for suggesting this improvement in the dance, originally I had 1st couple and their second corners turning with 2 pas de basque, while retaining promenade hold. 

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Note on [27-28]: O. Otto says best variant is corners in PdB, 1c in SkCh.

The name is given in the publications of the dance as "Bratach Bana" with no accent, but the gaelic song has "Bratach Bàna" with accent which is added as a spelling alias.