Siobhán f
Irish Gaelic form of JANE (SEE Jane), derived from the Anglo-Norman disyllabic form Jehanne. It became widely known in the English-speaking world as a result of the fame of the actress Siobhán McKenna (1923–86), and has recently come to be a popular given name.
Cognate: Scottish Gaelic: Siubhan.
First names dictionary. 2012.