Gannen is of Irish origin, derived from the ancient Gaelic name "Gannán," which means "little warrior" or "victorious." This name was traditionally given to boys and has been passed down through generations in Ireland. It is often associated with Irish culture and heritage.
The name Gannen experienced significant popularity between 2013 and 2018, with a notable spike in births in 2014 followed by a steady decline over the subsequent years.