Saint Thecla

13th century
Mosaic
St. Mark's Cathedral, Venice

St. Thecla's attribute is the cross. The round thing in her left hand may be a martyr's crown: she was considered a martyr because rather than give up the fait she endured torments that should have ended her life.

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Photographed at the cathedral by Richard Stracke, shared under Attribution-NonCommercial-ShareAlike license.