Giovanni Antonio Pellegrini (1675-1741)
The Trinity with Saints Joseph and Francis di Paola
Oil on canvas
San Vidal, Venice
The Trinity is pictured in the manner that had become standard in Pellegrini's time: The Son sits at the Father's right hand (as in the Apostles' Creed) and holds the Cross on his left shoulder, while the Spirit as a dove hovers above and between them.
St. Joseph holds a stalk of rather tiny flowers; usually they are lilies. His white hair and the tilt of his head echo the portrait of the Father above.
Francis of Paola's "Caritas" staff identifies the saint, though in this case the word is misspelled "CARIS."
Some web sites date this painting as circa 1690-1710, others as 1727. The flowers seen at the bottom of the photograph are actual flowers placed before the painting, not part of the painting itself.
This image in full resolution
More of The Trinity
More of St. Joseph
More of St. Francis of Paola
Photographed at the site by Richard Stracke, shared under Attribution-NonCommercial-ShareAlike license.