Cross of St. Patrick
emblem
Quick Summary
The Cross of St. Patrick is an emblem that features a red diagonal cross on a white background. It was in use in the late 15th century and was later incorporated into the British Union Jack. This emblem has been associated with the Fitzgerald family and the Spanish Cross of Burgundy. It also became an unofficial Irish flag by the late 15th or 16th century, and a Dutch book from the late 17th century labeled the design as the "Irish flag."12
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