Duerer, Albrecht (1471-1528). Medium: crayon on paper. Date: 1521. St Apollonia of Alexandria, Egypt (d.249 AD) virgin and martyr; according to legend, tortured by having her teeth broken and pulled out; hence is now the patron saint of dentists and dentistry and protector of people with toothache; feast day on February 9th; Provenance: Kupferstichkabinett, Berlin, Germany. Photographic rights held by The Bridgeman Art Library.