Posted on 21st September 2016 by melyn ‘One week ago’ in Cornish is ‘Nans yw unn seythun’ Yes, if you want to say ‘One week ago’ in the Cornish language, it’s ‘Nans yw unn seythun’. Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related Post navigationPrevious post: Etegves is the Cornish word for eighteenthNext post: Gloryus is the Cornish word for glorious