St Brigid and Fair Division

In Cogitosus’s Life of St Brigid the Virgin translation Liam de Paor St Brigid does a fair division into 3 equal parts. The algorithm used is not explained. "[She divides a silver dish exactly into three] Her miracles are great, but this one is especially admired. Three lepers came, asking for alms of any kind, and she gave them a silver dish. So that this would not cause discord and contention…