3 famous people named Allanah found on Wikipedia.
833 female in US.
Most recent ranking: 7363-th in year 2018
Best ranking: 2813-th in year 2006
Alanna, Alanah or Alannah or Alenah is a girl's given name which has disputed origins. It can be derived either from the Old High German word for "precious" or from the Irish language term "a leanbh" or "child", in English. In Gaelic Alanna as itself is the term for "beauty" or "serenity". It's sometimes considered a feminine form of Alan.
Alana is a common female given name coming from the Goidelic/ Hawaiian community meaning fair, beautiful, offering. It also is an Ibo given name which means father land or father's land in Igbo language.
Alana or Elana can also be the female name in an English translation of Elan which in Hebrew means "oak tree".