The Green harp flag was first used by Owen Roe O'Neill in the Irish Confederate Wars in 1642. The green stands for nationhood & rebellion.

The earliest depictions of the Celtic harp are found on 8th c. stone relics in Scotland, suggesting the harp was a Pictish innovation.

The Brian Boru Harp on display in Trinity College, Dublin. An Irish national icon, it's one of only three surviving medieval Gaelic harps.

The triangular harp does not appear in Ireland until the 10th century on the St. Máedóc shrine - A harpist is depicted in song.

'Deus Meus Adiuva Me', a medieval Irish & Latin hymn composed by Mael Ísu Ua Brolcháin who died 1086. https://youtu.be/YCSeo-P-P_E

"In the case of musical instruments i find commendable diligence in the Irish people." - Gerald of Wales on medieval Irish music.

The Irish military diaspora stretches far and wide - France, Spain, USA, UK, Mexico - nearly all have fought under the sign of the Harp.

The Brian Boru Harp on display in Trinity College, Dublin. An Irish national icon, it's one of only three surviving medieval Gaelic harps.

The Brian Boru Harp was once in the possession of King Henry VIII. He identified it as property of Donnchadh O’Brien, 'sixth in descent from the great hero of Clontarf.'

In 1966 Croke Park was transformed into a volkisch torch lit rallying ground to celebrate 50 years since the Easter Rising where episodes from Irish history from the Táin to Easter 1916 were acted out footage here: https://bit.ly/2Rp8cZZ