
Every other work in this collection carries a credit line reproduced from its holding institution’s own record. This one cannot: it is privately held, and no museum publishes an artist line, a date, a medium or an accession number for it. Saying so is more honest than leaving the space blank.
A saint is known by his emblem, and this one's is buried. X-rays found a bull's head in the lower-left corner — Saint Luke's ox, already invisible when the picture reached Sir Richard Worsley. Without it the standing figure has been called Paul, Luke and Joseph.
Catherine appears to have come late: in the X-ray the standing saint's sleeve passes through her head. She may have replaced an intended donor.
The Child tips forward off balance, arms out to her, and she reaches back. The painting has always been called the Mystic Marriage of Saint Catherine. He holds no ring.
Sources: Sotheby's, Important Old Master Paintings and Sculpture, New York, 28 January 2011, lot 156 · The National Gallery, London, collection glossary, 'Evangelists'.
Printed on demand. Public-domain masterwork, reproduced from a 4,000 px master of the original. The whole image is printed — never cropped to fit the sheet — so every sheet carries an archival margin, and the dimensions and resolution listed above are the ones you receive.