Saint Engracia was a native of Braga who had been promised in marriage to a nobleman of Roussillon. He sent as her escort to Gaul her uncle Lupercius (sometimes identified with the Luperculus who was a bishop of Eauze and a suite of sixteen noblemen and a servant named Julie or Julia.
Upon reaching Zaragoza, they learned of the persecution of Christians there by the governor Dacian, who reigned in the time of the emperors Diocletian and Maximian. She attempted to dissuade him from his persecution, but was whipped and imprisoned when it was discovered that she was a Christian. She died of her wounds.
Here is a painting by Bartolomé Bermejo (1474-1478) about the flagellation of Saint Engracia. Also available as print via Fine Art America