Complex sentence: It was an annual event in medieval times, held at Telltown, County Meath, Ireland as a revival of the assembly and funeral games for the goddess Tailtiu, and was held on Lughnasadh, aka Lammas Eve, (August 1st).
Split into simpler sentences: It was an annual event in medieval times, held at Telltown, County Meath, Ireland. The fair was a survival or revival of the "Áenach Tailteann", the assembly and funeral games for the goddess Tailtiu, and was held on Lughnasadh, aka Lammas Eve, (August 1st).