Download: http://archive.info-mac.org/font/cianan-t1.hqx
Cianan is a typeface inspired by a script in an old Irish manuscript which
gives the legendary history of Ireland. It includes accented characters
and the German 'double-s', as well as most of the useful characters and
punctuation.
Freeware. This is the Postscript Type 1 version.
http://www.antipope.org/feorag/freestuff/