Et ceciderunt catenae de manibus
And the chains fell off from the hands.
Acts 12.7
Ecce solvi te hodie de catenis quae sunt in manibus tuis.
Behold I have loosed thee this day from the chains which were upon thy hands.
Jeremiah 40.4
Modern Hagiography
Medieval Hagiography
Art & Architecture
Warburg Institute Iconographic Database
The Saints in Art by Joseph Maria von Radowitz.
Nihil sub sole novum 