13/04/2026
The phrase to “chance your arm” refers to a gamble being taken, a risk of some sort, with the following Irish legend tracing the origin of it all the way back to a family feud in Dublin of 1492.
Two rival families, the Butlers and FitzGeralds, were locked in a dispute. Both wanted a member of their own to be Lord Deputy and neither would concede. The FitzGeralds however, were more powerful, so when tension erupted into all out warfare the Butlers found themselves swiftly overpowered and outnumbered.
They sought refuge inside St. Patrick’s Cathedral in Dublin, hoping that the FitzGeralds would not slaughter them inside a house of God.
The Fitzgeralds surrounded the cathedral.
But instead of forcing their way in as was expected, they offered the Butlers a safe exit, free of bloodshed. Understandably unwilling to believe such a seemingly sketchy offer, the Butlers rejected it.
In response, the head of the FitzGeralds, Gerald FitzGerald, had a hole sawn in the church door, in through which he thrust his full arm and with it the offer of a hand in friendship - a daring act of good faith.
Black James, leader of the Butlers, upon seeing that Fitzgerald was willing to so brazenly “chance his arm” being chopped off accepted his word as good. Black James and Gerald FitzGerald shook hands through the hole and the two families made peace.
The door still survives today inside the same St. Patrick’s Cathedral in Dublin where it’s known as the Door of Reconciliation.