Monreale Abbey, that the first public holy image of Saint Thomas Becket, rendered as a mosaic icon (shown here), can be seen. Also, the cathedral of Marsala is dedicated to him. This was the first major church to be dedicated to the Anglo-Norman saint. Officially, he is "Saint Thomas of Canterbury."
Jackie Alio, one of Sicily's most popular historians, has written about Thomas Becket's Sicilian connection.