Analysis of information sources in references of the Wikipedia article "Nettlemas" in English language version.
Another old custom prevails also to some extent. May eve, the last day April, is called "Nettlemas night;" boys parade the streets with large bunches of nettls, stinging their playmates [..] These are the only customs peculiar to Cork
{{cite book}}
: CS1 maint: multiple names: authors list (link)