War Over Ireland (Tudor Line)

Early Hints
Edward VI of England didn't personally hold Ireland at the time, Christopher Preston, 2nd High Duke of Dublin was his represantative and tensions very rising with Phelim O'Neill throw out. Already in 1570s a group of irish earls created Frith-Béarla, Phelim was one of it's first members.

St. Patrick's Decleration
The Frith-Béarla gathered in Tyrone on the 17th March 1584 and signed the decleration that they decided for independence, quoting Edward's words of autonomous Ireland, which was actually the recognition of O'Neill ownership of Tyrone. The group agreed for Phelim to become the new High King of Ireland.