Page "Beltane" Paragraph 22

According to Dáithí Ó hÓgáin, the term Céad Shamhain or Cétshamhainin means " first half ", which he links to the Gaulish word samonios ( which he suggests means " half a year ") as in the end of the " first half " of the year that begins at Samhain.

Ó hÓgáin proposes that this term was also used in Scottish Gaelic and Welsh.