Found this in the internet:

Samhain is pronounced "sah-van", although many neo-Pagans pronounce it as "sow-in" (where "ow" rhymes with "cow"). Samhain is Irish Gaelic for the month of November. Samhuin is Scottish Gaelic for All Hallows, NOV-1.

You can find the full text at:

http://www.religioustolerance.org/hallo_sa.htm

I will be going as a Blues Bro. All Black

MrBill