The name Keanna has its origins in the Gaelic language, tracing back to Ireland and Scotland in the medieval period. It is believed to be a variation of the name Ciana, which itself is derived from the Irish word "cian," meaning "ancient" or "distant."

In its earliest forms, the name Keanna was sometimes spelled as Keena or Keina, reflecting the regional dialects of the Celtic languages. While there are no definitive records of the name appearing in ancient texts or religious scriptures, it is likely that it was in use among the Gaelic-speaking peoples of the British Isles during the Middle Ages.

One of the earliest recorded individuals with the name Keanna was Keanna MacRae, a Scottish noblewoman who lived in the 16th century. She was a member of the influential Clan MacRae and is noted for her involvement in the political intrigues of the time.

Another notable figure bearing the name was Keanna O'Connell, an Irish poet and storyteller who lived in the late 17th century. Her work, which drew heavily on the rich oral traditions of Ireland, helped preserve many ancient tales and legends for future generations.

In the 19th century, Keanna Fitzgerald was a celebrated Irish actress who graced the stages of London and Dublin. Her performances were praised for their emotional depth and her ability to capture the essence of the roles she portrayed.

Across the Atlantic, Keanna Whitehorse was a prominent figure in the Cherokee Nation during the late 19th century. She played a crucial role in preserving the language and cultural traditions of her people, serving as a teacher and advocate for Cherokee rights.

In more recent times, Keanna Reeves was a renowned American painter and sculptor who lived from 1905 to 1987. Her works, which often explored themes of nature and spirituality, are celebrated for their unique blend of abstract and representational styles.

While the name Keanna has seen occasional use throughout history, it has remained relatively uncommon compared to more widely popular names. However, its rich heritage and connections to the Gaelic cultures of the British Isles have endured, making it a unique and intriguing choice for those seeking a name with deep historical roots.